**Question:**In a population where 76% of voters prefer Candidate A, how many voters must be sampled for the distribution of voters that prefer Candidate A to be normally distributed?**[Answer Box]** *Note: To determine the sample size required for the sampling distribution to be approximately normal, you can use the Central Limit Theorem. Generally, a sample size of at least 30 is considered sufficient for most distributions, but for proportions, you may use the rule of thumb that both np and n(1-p) should be greater than 5, where n is the sample size and p is the proportion.*

Answered: In a population where 76 % of voters…

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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The sampling distribution of the sample proportion is approximately normal with at least 5 expected successes and 5expected failures. To find whether the distribution is normal, multiply the trials n by p and by (1-p).

Given:

p = 0.76

Now,

n(1-p) = 5

n * (1-0.76)= 5

n =20.833

n =21

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