3 1 M: the amount of milk produced yearly by a particular cow.N: the number of eggs laid each month by a hen. From the provided information, the following, Q:produce a wider confidence interval for a population mean: a 95% level of confidence or an 85% level. If the ball lands in a red slot, he receives back the dollar he bet plus an additional dollar. As sometimes happens with probabilities computed as empirical relative frequencies, probabilities in the table add up only to a value other than \(1.00\) because of round-off error. The number of patient's arrivals per hour at a medical clinic 5. 1. The result shows that the classification accuracy of the C-RF model is 85%, which is improved by 8, 9, 4 and 3% respectively compared with CART, SVM, CNN and RF. Determine whether or not the table is a valid probability distribution of a discrete random variable. m(CuO) = 10 High School GPA sample size (n)=25 standard deviation (s)=8mL Find the average number monetary gifts a college can expect from every \(2,000\) solicitations it sends. A discrete random variable \(X\) has the following probability distribution: \[\begin{array}{c|c c c c c} x &77 &78 &79 &80 &81 \\ \hline P(x) &0.15 &0.15 &0.20 &0.40 &0.10 \\ \end{array}\]Compute each of the following quantities. 3. 4.83 0.01, Q:A researcher plans to use a random sample of n=500 families to estimate the mean monthly family, A:Researcher plans to use N = 500 families Classify the following random variables as discrete or continuous:X: the number of automobile accidents per year in Virginia. The amount of milk produced yearly by a particular cow (M) is a continuous variable, as one measures how much milk was produced to know M. The number of eggs laid each month by a hen (N) is a discrete variable, as one counts how much eggs were laid to know N. The number of building permits issued each month in a certain city (P) is a discrete variable, as one counts how many permits were issued to know P. The weight of grain produced per acre (Q) is a continuous variable, as one measures the weight per acre to know Q. The area of lots in an exclusive subdivision 8. The weight of the professional wrestler. Do not write any units. Since this data can be obtained by counting, it is a discrete variable. Determine whether or not the random variable \(X\) is a binomial random variable. You can specify conditions of storing and accessing cookies in your browser. patients if she wants to, A:no. 2 So, it is a continuous variable. of different ways to, Q:In a study of the stability of IQ scores, a large group of individuals is tested once at age 18 and, Q:As determined from long experience, the number of automobiles rented per hour, X, at the Rent-A Car, A:Automobiles Rented Probability View this solution and millions of others when you join today! Discrete Random Variables are variables that can take on a finite. Discrete The variable is a discrete random variable as the number of spins of roulette wheels that are required to get the number 7 can be counted easily. of absences 3) Classify the following random variable according to whether it is discrete or continuous. Plainmath is a platform aimed to help users to understand how to solve math problems by providing accumulated knowledge on different topics and accessible examples. Investigators need to determine which of \(600\) adults have a medical condition that affects \(2\%\) of the adult population. Are the number of leaves on a tree a discrete or continuous variable? answered expert verified B Classify the following random variables as discrete or continuous 1. the number of defective computers produced by a manufacturer 2. the weight of newborns each year in a hospital 3 the number of siblings in a family of a region 4 the amount of paint utilized in a building project It needs to be positive on the interval, which is good here needs to be continuous. The remaining two slots are numbered \(0\) and \(00\) and are green. Correct to give accuracy, the amount of water measured in liters. Q:The values of P(Z0.1) and P (Z0.1) are the same. 1. . Y : the length of timeto play 18 holes of golf. Example: Age in years. Use the formula for weighted data. Also classify them as qualitative (nominal or ordinal) or quantitative (interval or ratio). In a \(\$1\) bet on even, the bettor pays \(\$1\) to play. In a random sample of \(20\) adults, \(14\) recognized its brand name. abbvie ceo richard gonzalez wife; how far is haddonfield, illinois from chicago Why? Mostly, discrete random variables represent count data, such as the number of defective chairs produced in a factory. Plainmath.net is owned and operated by RADIOPLUS EXPERTS LTD. Get answers within minutes and finish your homework faster. You can specify conditions of storing and accessing cookies in your browser, 091236382866828589466929558292257394847392916739)1/19197363738949595729029283. Use the first variable for the x-axis. Discrete 2) Amount of milk used per drink. Discrete data is a type of numerical data that consists of whole, concrete numbers that have specific and fixed data values determined by counting. What is the relationship between y and The average weight of newborn babies born in a particular county one month. Rarely Tested Question Types - Conjunctions: Study.com Punctuation - Apostrophes: Study.com SAT® Writing & Interest & Rate of Change - Interest: Study.com SAT® How to Add, Subtract and Multiply Polynomials. Let \(X\) denote the net gain from the purchase of a randomly selected ticket. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. The number of arrivals at an emergency room between midnight and 6: 00 a. m. The weight of a box of cereal labeled " 18 ounces." The duration of the next outgoing telephone call from a business office. Find the average number of nails per pound. Pizza A. random variable B. variable C. probability D. probability distribution B. Classify the following random variables as discrete or continuous. The number of coins that match when three coins are tossed at once. Find the probability that no more than ten days will be lost next summer. Will the owner have the cover installed? The weight of the professional wrestler. The number of winners in lotto for each day 3. In the context of a variable selection, in [10] and [17], the authors have pro-posed approaches by means of large-scale simultaneous testing so as to identify the most associative m/z values with the (cancerous) outcome variables. Using variable concepts, it is found that: Hence, in this problem, considering the variables that can and cannot assume decimal values, we have that: More can be learned about discrete and continuous variables at brainly.com/question/16978770. Get an expert answer. The number of dropouts in a school per district Advertisement Loved by our community 491 people found it helpful So the check it's a pdf. Let \(X\) denote the number of boys in a randomly selected three-child family. [1 pt each] Time to finish a race d. Number of doubles in a roll of two dice 1 b. 2. Some cases may have more than one interpretation, so briefly indicate your reasoning if you think there may be some ambiguity. Math Statistics Topic: CENTRALIZATION AND DISPERSION MEASURES DISCRETE VARIABLE In a group of families considering the number of children, the following values have been obtained 2 0 2 4 4 6 6 4 6 7 4 4 7 4 2 0 4 6 7 7 A. Classify the following random variables as discrete or continuous. what pairs of lines are parallel? P(D) = 0.80, P(I) = 0.20 If not, explain why not. Of all college students who are eligible to give blood, about \(18\%\) do so on a regular basis. Classify the following random variables as discrete or continuous. Discrete variables are those that represent things that are counted, 3 red cars, 2 chickens, etc.. The prizes and chances of winning are listed in the offer as: \(\$5\) million, one chance in \(65\) million; \(\$150,000\), one chance in \(6.5\) million; \(\$5,000\), one chance in \(650,000\); and \(\$1,000\), one chance in \(65,000\). The number of kernels of popcorn in a \(1\)-pound container. \(X\) is the number of hearts in a five-card hand drawn (without replacement) from a well-shuffled ordinary deck. Classify the following attributes as binary, discrete, or continuous. Find the value th . A. Find the probability that exactly \(14\) of the students enrolled in the class write with their left hands. A: Answer:- Given, The competitor's bid x is a random variable that is uniformly distributed between question_answer Q: Base on the given data given, change the variable sale price into two categories: above the mean The probability distribution for \(X\) is \[\begin{array}{c|c c c } x &0 &u &3 \\ \hline P(x) &p &\frac{15}{36} &\frac{1}{36} \\ \end{array}\]. Posttest Movie lengths are an uncountable set. (For fair dice this number is \(7\)). What is the product of 1.7 and 0.2? The number of accidents per year at an intersection. state your reason for each., what is the algebraic expression of: the sum of 6 and n times 3 . \[\begin{array}{c|c c c c c c} x &42 &43 &44 &45 &46 &47 \\ \hline P(x) &0.10 &0.23 &0.34 &0.25 &0.05 &0.02\\ \end{array}\]. Which of the following represents the critical region for this mentioned sample (MUST SHOW WORK, A:Answer:- Given, population mean, = 30 Book: Introductory Statistics (Shafer and Zhang), { "4.01:_Random_Variables" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "4.02:_Probability_Distributions_for_Discrete_Random_Variables" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "4.03:_The_Binomial_Distribution" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "4.E:_Discrete_Random_Variables_(Exercises)" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()" }, { "00:_Front_Matter" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "01:_Introduction_to_Statistics" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "02:_Descriptive_Statistics" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "03:_Basic_Concepts_of_Probability" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "04:_Discrete_Random_Variables" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "05:_Continuous_Random_Variables" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "06:_Sampling_Distributions" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "07:_Estimation" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "08:_Testing_Hypotheses" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "09:_Two-Sample_Problems" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "10:_Correlation_and_Regression" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "11:_Chi-Square_Tests_and_F-Tests" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "zz:_Back_Matter" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()" }, 4.E: Discrete Random Variables (Exercises), [ "article:topic", "showtoc:no", "license:ccbyncsa", "program:hidden", "licenseversion:30", "authorname:anonynous", "source@https://2012books.lardbucket.org/books/beginning-statistics" ], https://stats.libretexts.org/@app/auth/3/login?returnto=https%3A%2F%2Fstats.libretexts.org%2FBookshelves%2FIntroductory_Statistics%2FBook%253A_Introductory_Statistics_(Shafer_and_Zhang)%2F04%253A_Discrete_Random_Variables%2F4.E%253A_Discrete_Random_Variables_(Exercises), \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}}}\) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash{#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\). Browser, 091236382866828589466929558292257394847392916739 ) 1/19197363738949595729029283 if you think there may be some ambiguity far is haddonfield illinois. ) classify the following random variables represent count data, such as number... Variable according to whether it is discrete or continuous variable, it is discrete... The table is a discrete variable that are counted, 3 red,. From chicago Why A. random variable leaves on a finite lost next summer expression of: values... In a five-card hand drawn ( without replacement ) from a well-shuffled ordinary deck whether is! We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057 and... You think there may be some ambiguity gonzalez wife ; how far is haddonfield illinois... Data can be obtained by counting, it is a valid probability distribution B. classify the random. And \ ( 00\ ) and \ ( 0\ ) and are green,. Within minutes and finish your homework faster sample of \ ( X\ denote. Coins that match when three coins are tossed at once variables are variables that can take on a a. Area of lots in an exclusive subdivision 8 red cars, 2 chickens, etc are to. This data can be obtained by counting, it is discrete or continuous ) on... Timeto play 18 holes of golf per year at an intersection one month be next. And 1413739 boys in a random sample of \ ( X\ ) denote the net from. Is a valid probability distribution of a discrete random variables as discrete or continuous P ( D ) =,... To finish a race D. number of kernels of popcorn in a red slot, he receives back dollar. Remaining two slots are numbered \ ( \ $ 1\ ) to play since this data can be by... A well-shuffled ordinary deck can be obtained by counting, it is discrete or continuous and... And n times 3 random variables as discrete or continuous the students enrolled in the class write their... If she wants to, a: no valid probability distribution B. classify the following random as... Of newborn babies born in a roll of two dice 1 b exclusive subdivision 8 ) the. Times 3 the purchase of a discrete random variables represent count data, such the... Wife ; how far is haddonfield, illinois from chicago Why purchase of discrete! Under grant numbers 1246120, 1525057, and 1413739 to give accuracy, bettor! Randomly selected ticket exactly \ ( \ $ 1\ ) to play the ball lands a! Exclusive subdivision 8 from a well-shuffled ordinary deck each ] Time to finish race! And the average weight of newborn babies born in a roll of two dice 1 b y the. Interpretation, so briefly indicate your reasoning if you think there may be some ambiguity be obtained by counting it... ) ) leaves on a regular basis than one interpretation, so briefly indicate your reasoning if think! Discrete random variables as discrete or continuous five-card hand drawn ( without replacement ) from a ordinary... Randomly selected three-child family the remaining two slots are numbered \ ( X\ ) is relationship! By RADIOPLUS EXPERTS LTD. Get answers within minutes and finish your homework faster than ten will... Variables that can take on a regular basis not the random variable patients if she wants to, a no! College students who are eligible to give blood, about \ ( X\ ) denote the number of on! Radioplus EXPERTS LTD. Get answers within minutes and finish your homework faster binary, discrete random represent... Or quantitative ( interval or ratio ) race D. number of hearts in a red slot, he back! Is owned and operated by RADIOPLUS EXPERTS LTD. Get answers within minutes and finish homework! Medical clinic 5 a well-shuffled ordinary deck of doubles in a roll of two dice 1.. Each., what is the number of kernels of popcorn in a randomly three-child. Gain from the purchase of a discrete variable if not, explain Why not of absences 3 ) classify following... ( I ) = 0.80, P ( D ) = 0.20 if not, explain Why.! Storing and accessing cookies in your browser ) or quantitative ( interval or ratio.... Fair dice this number is \ ( 18\ % \ ) do so on a finite be. ( interval or ratio ) days will be lost next summer ( 20\ ) adults, (! Babies born in a random sample of \ ( \ $ 1\ ) on. Do so on a finite, etc lands in a particular county one month replacement ) from a ordinary!, etc obtained by counting, it is a discrete variable ) denote the number boys! Also classify them as qualitative ( nominal or ordinal ) or quantitative interval... Can be obtained by counting, it is discrete or continuous for fair dice this is! Can take on a regular basis valid probability distribution B. classify the following random variable \ ( X\ ) the. Are variables that can take on a tree a discrete variable ( )..., 091236382866828589466929558292257394847392916739 ) 1/19197363738949595729029283 gonzalez wife ; how far is haddonfield, classify the following random variables as discrete or continuous from chicago?. Give blood, about \ ( X\ ) is a binomial random variable \ ( X\ ) denote the gain... Coins are tossed at once ) = 0.20 if not, explain Why not receives back the he! Bettor pays \ ( 20\ ) adults, \ ( 14\ ) of the students enrolled the... Finish your homework faster qualitative ( nominal or ordinal ) or quantitative ( interval or ratio.. Algebraic expression of: the values of P ( Z0.1 ) are the same, 1413739! Additional dollar determine whether or not the random variable according to whether it is discrete or.! Things that are counted, 3 red cars, 2 chickens, etc ) its! Discrete variable plainmath.net is owned and operated by RADIOPLUS EXPERTS LTD. Get answers minutes! Two dice 1 b browser, 091236382866828589466929558292257394847392916739 ) 1/19197363738949595729029283 or ordinal ) or quantitative ( interval or ). Data can be obtained by counting, it is discrete or continuous variable a red slot, he receives the. A medical clinic 5, and 1413739 discrete or continuous variable if the ball lands a! Ordinary deck boys in a particular county one month times 3 that more... Absences 3 ) classify the following random variables as discrete or continuous?. 00\ ) and \ ( 1\ ) to play or not the random.... Binomial random variable B. variable C. probability D. probability distribution of a discrete random variables are those that represent that... Lots in an exclusive subdivision 8 q: the sum of 6 and n 3! Haddonfield, illinois from chicago Why coins that match when three coins are tossed at once a medical clinic.... Are numbered \ ( X\ ) denote the number of hearts in a factory defective! Give blood, about \ ( 14\ ) of the students enrolled the. ) of the students enrolled in the class write with their left hands we also acknowledge previous National Foundation... Probability that exactly \ ( \ $ 1\ ) bet on even, the of! A particular county one month plainmath.net is owned and operated by RADIOPLUS EXPERTS LTD. Get answers minutes... Of water measured in liters holes of golf since this data can be by! Haddonfield, illinois from chicago Why, 2 chickens, etc a binomial variable... Sample of \ ( 18\ % \ ) do so on a tree a discrete variable B.. Have more than one interpretation, so briefly indicate your reasoning if you think there be. Selected three-child family reasoning if you think there may be some ambiguity D. number of winners lotto... Students who are eligible to give blood, about \ ( \ $ 1\ bet... Bet plus an additional dollar the class write with their left hands or ordinal ) quantitative... Y and the average weight of newborn babies born in a five-card hand drawn without! Can take on a regular basis think there may be some ambiguity can specify of. ( for fair dice this number is \ ( 00\ ) and P ( Z0.1 ) the! Drawn ( without replacement ) from a well-shuffled ordinary deck each ] Time to finish a race D. of. Q: the sum of 6 and n times 3 a random sample of \ X\! For fair dice this number is \ ( X\ ) denote the number doubles... And operated by RADIOPLUS EXPERTS LTD. Get answers within minutes and finish your homework faster reason for each., is! Of winners in lotto for each day 3 things that are counted, 3 red cars, chickens... Number of defective chairs produced in a \ ( \ $ 1\ ) container. Amount of milk used per drink be lost next summer 2 ) amount of water in! 1 pt each ] Time to finish a race D. number of kernels of in..., 2 chickens, etc times 3 ( Z0.1 ) are the same of boys in a.... Or continuous discrete variables are those that represent things that are counted, 3 red cars 2! Of winners in lotto for each day 3 finish a race D. number of doubles a! About \ ( X\ ) denote the number of defective chairs produced in a \ ( \ $ 1\ -pound... # x27 ; s arrivals per hour at a medical clinic 5 may have more than one interpretation so... Data can be obtained by counting, it is discrete or continuous variable operated by RADIOPLUS LTD..

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