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. (b) Find the standard deviation of p. (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
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. (b) Find the standard deviation of p. (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
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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Question
![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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8fa3c2f3-5601-420c-966e-14c1c788064c%2Fc7723c7c-6e5b-4a11-8f0c-f45c373ebfe7%2Faxvyz8l_processed.jpeg&w=3840&q=75)
Transcribed Image Text: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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