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# Estimate the difference in the proportion of morning

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A supermarket chain wants to determine the difference the proportion of morning shoppers who are man and the proportion of evening shoppers who are men. A random sample of 400 morning shoopers showed that 48 were men. A random sample of 480 evening shoppers showed 187 were men. Constuct and explain a 95% confidence interval estimate of the difference in the proportion of morning and evening shoppers who are men.

##### Solution Summary

The expert estimates the difference in the proportion of morning and afternoon.

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Z Test for Differences in Two Proportions

Data
Hypothesized Difference 0
Level of Significance 0.05
Group 1
Number of Successes 48
Sample ...

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