The population mean proportion is .30. We decide to sample the population by randomly selecting 25 items
Question:
The population mean proportion is .30. We decide to sample the population by randomly selecting 25 items and computing sample proportions.
a. Can we use the normal distribution to approximate the distribution of sample proportions? Why?
b. What is the standard error of this distribution?
c. Applying the empirical rule, approximately 68% of sample proportions are between what values?
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a b C yes npz 5ANDnp 1 p 25 np408032np 1 p 4080 2064Both c...View the full answer
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Related Book For 
Statistical Techniques In Business And Economics
ISBN: 9781265779696
19th Edition
Authors: Douglas Lind, William Marchal, Samuel Wathen
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