To test a drug intended to increase memory, 80 subjects were randomly given a pill that eithercontained the drug or was a placebo. After ten minutes, the subjects were asked to look at aposter with pictures of 20 common objects for five minutes. After waiting ten minutes, thesubjects were asked to list as many of the objects as they could recall. For the subjects thattook the drug, 75% were able to list at least half of the objects. For the subjects that took theplacebo, 70% were able to list at least half of the objects. Check that the conditions are met fora hypothesis test to compare the population proportion of subjects that took the drug thatcould list at least half of the objects to the proportion that took the placebo that could.Select the correct answer below:All of the conditions are met.The samples are not random samples of the populations.O The samples are not independent.Not all the values np. n₁q. nap, and nag are at least 5.

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Answered: To test a drug intended to increase…

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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Indiana has a population of about 7 million people and Ohio about 12 million. Is it possible for there to be a poll where over 50% of Hoosiers say "yes", over 50% of Ohioans say "yes", but over 50% of all residents of both states say "no"? If no, explain why not. If yes, give an example of how that could happen.
In a memory test, the test subjects are given a large number and are asked to memorize it. Historical records show that 80% of test subjects pass the test. To pass the test, a subject must exactly repeat all the digits in the number after two hours. A random sample of 625 people to take the memory test is going to be chosen. Let p be the proportion of people in the sample who pass the test. Answer the following. (If necessary, consult a list of formulas.) (a) Find the mean of P. 0 (b) Find the standard deviation of p. 0 (c) Compute an approximation for P(P >0.84), which is the probability that more than 84% of the people in the sample pass the test. Round your answer to four decimal places. 0 X
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only need help with the questions in the second picture attached.
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