USA Today notes (Mary Beth Marklein, College Gender Gap Widens: 57% Are Women) that there are more
Question:
a. Determine if the sample sizes are large enough so that the sampling distribution of the difference between the sample proportions of male under-graduates in the two income categories can be approximated by a normal distribution.
b. Perform a test of hypothesis to determine that the proportion of male undergraduates in the upper-income category is more than 1% greater than that of the low-income category. Use a significance level of 0.01.
c. Calculate the difference between the two sample proportions. Given the magnitude of this difference, explain the results of part b.
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Related Book For
Business Statistics A Decision Making Approach
ISBN: 9780133021844
9th Edition
Authors: David F. Groebner, Patrick W. Shannon, Phillip C. Fry
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