May 25, 2015

Homework Help: statistics

Posted by Natasha on Tuesday, August 17, 2010 at 2:18pm.

2. Assume that the population proportion of adults having a college degree is 0.35. A random sample of 200 adults is to be selected to test this claim.
A) What is the shape, mean, and standard deviation of the sampling distribution of the sample proportion for samples of size 200?
B) What is the probability that the sample proportion will fall within 2% of the population proportion?
C) Answer part B if the sample size were increased to 500 adults. How does the answer to part C differ from part B, and why?

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