You decide to collect a bunch of cans of soda and measure the volume of soda in each can. Let X= the number of mL of soda in eachcan. What type of variable is X?A) X is a continuous random variableB) X is a discrete random variableC) X is constantD) X is not a random variable

A discrete random variables are those variable which can assume only a finite, or countably…

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A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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nd markers without ink. Assume that the box contains 17 markers: 12 that contain ink and 5 tha ontain ink. A sample of 8 markers is selected and a random variable Y is defined as the number arkers selected which do not have ink. ow many different values are possible for the random variable Y? Part 2
Determine whether the random variable is discrete or continuous. In each case, state the possible values of the random variable. (a) The number of people with blood type A in a random sample of 14 people. (b) The time it takes to fly from City A to City B. (a) is the number of people with blood type A in a random sample of 14 people discrete or continuous? OA. The random variable is continuous. The possible values are 0≤x≤ 14. B. The random variable is discrete. The possible values are x = 0, 1, 2,..., 14. OC. The random variable is discrete. The possible values are 0 ≤x≤ 14. O D. The random variable is continuous. The possible values are x = 0, 1, 2,..., 14. (b) is the time it takes to fly from City A to City B discrete or continuous? .RE OA. The random variable is continuous. The possible values are t> 0. OB. The random variable is discrete. The possible values are t= 1, 2, 3, ... OC. The random variable is discrete. The possible values are t > 0. OD. The random variable is…
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Which one of these variables is a continuous random variable? Oa. The number of tattoos a randomly selected person has. Ob. The number of correct guesses on a multiple choice test. The time it takes a randomly selected student to complete an exam. Od. The number of women taller than 68 inches in a random sample of 5 women O . None of these
Diagnostic tests of medical conditions can have several types of results. The test result can be positive or negative, whether or not a patient has the condition. A positive test (+) indicates that the patient has the condition. A negative test (−) indicates that the patient does not have the condition. Remember, a positive test does not prove the patient has the condition. Additional medical work may be required. Consider a random sample of 200 patients, some of whom have a medical condition and some of whom do not. Results of a new diagnostic test for the condition are shown. Condition Present Condition Absent Row Total Test Result + 108 22 130 Test Result − 20 50 70 Column Total 128 72 200 Assume the sample is representative of the entire population. For a person selected at random, compute the following probabilities. (Enter your answers as fractions.) (a) P(+ | condition present); this is known as the sensitivity of a test.(b) P(− | condition present); this is…
ANSWERS ALL PARTS A,B,C A) Roll a dice, X=the number obtained. Calculate E(X), Var(X). Use two expressions to calculate variance. B) Two fair dice are tossed, and the face on each die is observed. Y=sum of the numbers obtained in 2 rolls of a dice. Calculate E(Y), Var(Y). C) Roll the dice 3 times, Z=sum of the numbers obtained in 3 rolls of a dice. Calculate E(Z), Var(Z) from the result of part a and b.
determine whether the random variable x is discrete or continuous. let x represent the populations of the 50 U.S. states
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There are 20 different pairs of shoes. Pick at random 10 shoes. Let X be the number of paired shoes, M be the number of shoes that are left-foot, N be the number of shoes that are right-foot. (a) Find the distribution of X. Show your problem-solving process (not just the final answer) with a few sentences of explanation and give the formula (b) Let Y = M – N. Give all possible values of Y. Find the distribution of Y. Show your problem-solving process (not just the final answer) with a few sentences of explanation and give the formula. (c) let Z = |Y|, compute E(X), Var(X), E(Z) and Var(Z). Show your problem-solving process (not just the answer), keep 2 decimal places for E(X) and E(Z), and use the approximate values for the calculations of Var(X) and Var(Z).

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YOu decide to collect a bunch of canS of Soda and measure the Volume oT Soda in each can. Let X= the number of mL oT Soda in6 can. What type of variable is X? A X is a continuous random variable B) x is a discrete random variable X is constant X is not a random variable