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QUESTION:
Which one of the following is true regarding the standard deviation of the sampling distribution of the sample proportion, p-hat, of "yes" responses?
ANSWER:
p(1−p)100−−−−−√ . For a sample of size 900, the sampling distribution of p-hat is: p(1−p)900−−−−−√ . This is the correct answer since: p(1−p)900−−−−−√ = p(1−p)9∗100−−−−−√ = 13p(1−p)100−−−−−√ .