Question 1
If the standard error of the sampling distribution of a sample proportion is 0.02049 for samples of size 500, then the population proportion must be either:
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0.2 or 0.8.
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0.3 or 0.7.
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0.6 or 0.4.
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0.15 or 0.85.
Question 2
Ifn≥ 30, we know that the sampling distribution of\(\style{font-family:Times New Roman;}{\widehat p}\)is:
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approximately normal.
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exactly normal.
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suitable for estimating the unknown parameterp.
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unknown, becausen ≥ 30 alone tells us nothing substantial concerning the sampling distribution of\(\style{font-family:Times New Roman;}{\widehat p}\).