Reconsider the previous exercise about the study of whether there is an association between number of Facebook friends and a person’s sex.
a. Use the information available in the previous exercise to find a standardized statistic to test whether the average number of Facebook friends men have is different from that of women.
b. Based on the standardized statistic, what is the strength of evidence against the null hypothesis?

Data from previous exercise

In a survey of introductory statistics students, an instructor asked her students to report how many Facebook friends they had. Suppose that the intent is to study whether there is an association between number of Facebook friends and a person’s sex.