What could be the possible values of the random variable below?Amount of blood in a regular bag with 0.7-liter capacityO Not a random variableO=0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7O S0.7

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Answered: What could be the possible values of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In a survey of 500 drivers from the South, 408 wear a seat belt. In a survey of 370 drivers from the Northeast, 288 wear a seat belt. At a = 0.07, can you support the claim that the proportion of drivers who wear seat belts is greater in the South than in the Northeast? Assume the random samples are independent. Complete parts (a) through (e). (a) Identify the claim and state Ho and Ha The claim is "the proportion of drivers who wear seat belts in the South is greater than in the Northeast." Let p, represent the population proportion for the South, and p2 represent the population proportion for the Northeast. State Hg and H Choose the correct answer below. O B. Ho: P1 = P2 OC. Ho: P, * P2 O A. Ho: P1 > P2 H: P, SP2 H: P, *P2 Ha: P1 = P2 O D. Ho: P1 P2 OF. Ho: P1 2 P2 H,: P, OC. z
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According to a study conducted by a statistical organization, the proportion of people who are satisfied with the way things are going in their lives is 0.84. Suppose that a random sample of 100 people is obtained. Complete parts (a) through (e) below. (a) Suppose the random sample of 100 people is asked, "Are you satisfied with the way things are going in your life?" Is the response to this question qualitative or quantitative? Explain. O A. The response is quantitative because the responses can be classified based on the characteristic of being satisfied or not. O B. The response is quantitative because the number of people satisfied can be counted. O C. The response is qualitative because the number of people satisfied can be counted. OD. The response is qualitative because the responses can be classified based on the characteristic of being satisfied or not. (b) Explain why the sample proportion, p, is a random variable. What is the source of the variability? O A. The sample…
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zyBooks catalog BOOKS lypothesis tests for the difference between two population means Jump to level 1 An online math tutor service would like to claim that the average time spent taking a standardized test after students go through tutoring is less than the average time spent before going through tutoring. A simple random sample of students takes a pre-test, then goes through tutoring and takes a post-test. Results of the sample are shown below. Before What are the population parameters? 75.556 126.448 125.203 Variance Observations Pick V Pearson Correlation 0.521 Hypothesized Mean Difference 0 Is the two-sample hypothesis test a paired t-test or an unpaired t-test? t Stat -1.438 PIT
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In an annual poll about consumption habits, telephone interviews were conducted for a random sample of 1,014 adults aged 18 and over. One of the questions was, "How many cups of coffee, if any, do you drink on an average day?" The following table shows the results obtained. Number ofCups per Day Number ofResponses 0 365 1 264 2 193 3 91 4 or more 101 Define a random variable x = number of cups of coffee consumed on an average day. Let x = 4 represent four or more cups. (a) Develop a probability distribution for x. (Round your answers to three decimal places.) Number ofCups per Day f(x) 0 1 2 3 4 or more (b) Compute the expected value of x. (Round your answer to three decimal places.) E(x) = (c) Compute the variance of x. (Round your answer to three decimal places.) Var(x) = (d) Suppose we are only interested in adults who drink at least one cup of coffee on an average day. For this group, let y = the number of cups of…
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What could be the possible values of the random variable below? Amount of blood in a regular bag with 0.7-liter capacity O Not a random variable Oz=0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7 O S 0.7