I have another assignment and need help. Please see the attached document

Problem 1 Assume that I drew 2 random samples of University of Phoenix students, gave them a statistics exam, and one group (men) had a 76 average score and the other group (women) had an average score of 80. Is it possible that things are not as they seem -- that the women are smarter than the men? (A question like this means that there is a hypothesis test involved, right?) Note: the standard deviation of the men's scores was 8 and the women's scores was 6. There were 36 in each sample. Assume a .05 level of significance. Problem 2 Listed below is the rate of return for one year (reported in percent) for a sample of 12 mutual funds that are classified as taxable money market funds. 4.63 4.15 4.76 4.70 4.65 4.52 4.70 5.06 4.42 4.51 4.24 4.52 Using the .05 significance level, is it reasonable to conclude that the mean rate of return is more than 4.50%? Problem 3 Class -- read the attached Chi-Square document as well as Chapter 15 from the text. The following is a problem that involves a Chi-Square Goodness-of-Fit test involving unequal frequencies. Show all 5 steps of the test -- give it a try! Steve The chief of security for the Mall of the Dakotas was directed to study the problem of missing goods. He selected a sample of 100 boxes that had been tampered with and ascertained that for 60 of the boxes, the missing pants, shoes, and so on were attributed to shoplifting. For 30 other boxes employees had stolen the goods, and for the remaining 10 boxes he blamed poor inventory control. In his report to the mall management, can he say that shoplifting is twice as likely to be the cause of the loss as compared with either employee theft or poor inventory control and that employee theft and poor inventory control are equally likely? Use the 0.02 level