1) Managers rate employees according to job performance and attitude. The results for several randomly selected employees are given below. Use the given data to find the equation of the regression line. Performance 59 63 65 69 58 77 76 69 70 64 Attitude 72 67 78 82 75 87 92 83 87 78

2) A sociologist wants to know if there is a correlation between the ages of spouses. The following table lists the ages of nine randomly selected married couples. Age of husband 49 25 40 52 58 32 43 42 47 Age of wife 43 28 30 57 52 27 52 43 43 a) Find the correlation r between the ages of the husbands and the wives. b) Find critical values for r. c) Determine if there is significant linear correlation between the ages of the husbands and the wives using a 0.05 significance level. d) Clearly state the conclusion.

3) The table below describes the smoking habits of a group of asthma sufferers. Nonsmoker Occasional Regular smoker Heavy smoker Total Men 384 33 64 49 530 Women 349 44 72 38 503 Total 733 77 136 87 1033 If one of the 1033 people is randomly selected, find the probability that the person is a man or a heavy smoker.

Can you please write out all the math work and label the steps.