A recent study focused on the number of times men and ...



A recent study focused on the number of times men and women who live alone buy take-out dinner in a month. The information is summarized below. Statistic Men Women Mean 24.51 22.69 Standard deviation 4.48 3.86 Sample size 20 15 .At the .01 significance level, is there a difference in the mean number of times men and women order takeout dinners in a month? What is the p-value?

H0: (1 =(2

Ha: (1 ((2

Get the test statistic:

(24.51-22.69)/sqrt(4.48^2/20 + 3.86^2/15)

= 1.288

The p value (from a table) is: 0.2067

This is well above the 0.01 significance, so we do not reject the null hypothesis. There is no statistic difference.

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