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A polling organization polls n = 400 randomly selected registered voters to estimate the proportion of a large population that intends to vote for Candidate Y in an upcoming election. Although it is not known by the polling organization, p = 0.7 is the actual proportion of the population that prefers Candidate Y. (a) Give the numerical value of the mean of the sampling distribution of p. Mean = (b) Calculate the standard deviation, s.d., of the sampling distribution of p. (Round your answer to the nearest hundredth.) s.d. = (c) Use the Empirical Rule to find values that fill in the blanks in the following sentence. (Round all answers to the nearest hundredth.) In about 99.7% of all randomly selected samples of n = 400 from this population, the sample proportion preferring Candidate Y will be between and

A polling organization polls n = 400 randomly selected registered voters to estimate the proportion of a large population that intends to vote for Candidate Y in an upcoming election. Although it is not known by the polling organization, p = 0.7 is the actual proportion of the population that prefers Candidate Y. (a) Give the numerical value of the mean of the sampling distribution of p. Mean = (b) Calculate the standard deviation, s.d., of the sampling distribution of p. (Round your answer to the nearest hundredth.) s.d. = (c) Use the Empirical Rule to find values that fill in the blanks in the following sentence. (Round all answers to the nearest hundredth.) In about 99.7% of all randomly selected samples of n = 400 from this population, the sample proportion preferring Candidate Y will be between and

MATLAB: An Introduction with Applications
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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A polling organization polls n = 400 randomly selected registered voters to estimate the proportion of a large population that intends to vote for Candidate Y in an upcoming election. Although it is not known by the polling organization, p = 0.7 is the actual proportion of the population that prefers Candidate Y. (a) Give the numerical value of the mean of the sampling distribution of p. Mean = (b) Calculate the standard deviation, s.d., of the sampling distribution of p. (Round your answer to the nearest hundredth.) s.d. = (c) Use the Empirical Rule to find values that fill in the blanks in the following sentence. (Round all answers to the nearest hundredth.) In about 99.7% of all randomly selected samples of n = 400 from this population, the sample proportion preferring Candidate Y will be between and
Transcribed Image Text:A polling organization polls n = 400 randomly selected registered voters to estimate the proportion of a large population that intends to vote for Candidate Y in an upcoming election. Although it is not known by the polling organization, p = 0.7 is the actual proportion of the population that prefers Candidate Y. (a) Give the numerical value of the mean of the sampling distribution of p. Mean = (b) Calculate the standard deviation, s.d., of the sampling distribution of p. (Round your answer to the nearest hundredth.) s.d. = (c) Use the Empirical Rule to find values that fill in the blanks in the following sentence. (Round all answers to the nearest hundredth.) In about 99.7% of all randomly selected samples of n = 400 from this population, the sample proportion preferring Candidate Y will be between and
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