Refer to Examples 1 and 2 about the California exit poll, for which the sample size was
Question:
a. Identify n and p for the binomial distribution that is the sampling distribution of the number in the sample who voted for Whitman, and use n and p to find the mean and standard deviation of the sampling distribution of the number in the sample who voted for Whitman. (Use the value for p based on the population vote after the election was concluded.)
b. Find the mean and standard deviation of the sampling distribution of the proportion of the people in the sample who voted for Whitman.
c. Compare the mean and standard deviation in part b to the mean and standard deviation in part a.
d. What is the expected shape of both the sampling distribution in part a and in part b? Explain.
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...
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Related Book For
Statistics The Art And Science Of Learning From Data
ISBN: 9780321755940
3rd Edition
Authors: Alan Agresti, Christine A. Franklin
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