A question is asked of a class of 2700 freshman, and 25% of the students know the correct answer. If a sample of 81 students is taken repeatedly, answer the following questions.

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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A question is asked of a class of 2700 freshmen, and 25% of the students know the correct answer. If a sample of 81 students is taken repeatedly, answer the following questions.

a) What is the expected value of the mean of the sampling distribution of sample proportions?  
(Round to 4 decimal places)  
[_____________]

b) What is the standard deviation of the mean of the sampling distribution of sample proportions?  
(Round to 4 decimal places)  
[_____________]

c) What is the P(
Transcribed Image Text:A question is asked of a class of 2700 freshmen, and 25% of the students know the correct answer. If a sample of 81 students is taken repeatedly, answer the following questions. a) What is the expected value of the mean of the sampling distribution of sample proportions? (Round to 4 decimal places) [_____________] b) What is the standard deviation of the mean of the sampling distribution of sample proportions? (Round to 4 decimal places) [_____________] c) What is the P(
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Given Data

population proportion,p = 0.25

sample size n = 81

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