Suppose, you are testing the hypotheses H0: p = 0.30 vs. HA: p 0.30. A sample

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Suppose, you are testing the hypotheses H0: p = 0.30 vs. HA: p  0.30. A sample size of 350 results in a sample proportion of 0.27.

a) Construct a 95% confidence interval for p.

b) Based on the confidence interval, at a = 0.05 can you reject H0? Comment.

c) What is the difference between the standard deviation and the standard error of the sample proportion?

d) Which is used in computing the confidence interval?

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Business Statistics

ISBN: 9781292269313

4th Global Edition

Authors: Norean Sharpe, Richard De Veaux, Paul Velleman

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