Problem 1

The table below has data from a 2009 Canadian Journal of Human Sexuality study. The data shows gender differences in response to partner influence and social expectation questions among students who had ever had sexual intercourse. The sample for this study included only students who had ever had sexual intercourse (30.7% of the total sample) yielding 2145 respondents after corrections. The age range for the study sample was 13 to 21 years old (mean = 15.8, standard deviation = 1.19). The vast majority were 14 to 17 years old (93%) and 45% were 16 years old. Less than 2% were aged 13 or 19 to 21. Use the results and a 1% significance level to test the claim that unwanted sex and gender are independent.

Have had sex when did not want to:     Male     Female       Total
                                                            Yes   826         883          1709
                                                             No   118          318            436
                                                         Total   944        1201          2145