A Recent Study Focused on the Number of Times Men

Multiple Choice

A recent study focused on the number of times men and women send a Twitter message in a day. The information is summarized next. At the .01 significance level, is there a difference in the mean number of times men and women send a Twitter message in a day? What is the value of the test statistic for this hypothesis test?

A) 2.668
B) 2.672
C) 2.58
D) 2.40