Question

Refer to the accompanying data set and construct a 90% confidence interval estimate of the mean pulse rate of adult​ females; then do the same for adult males. Compare the results.

Males	Females
85	79
76	82
53	73
62	57
49	99
63	72
52	75
78	75
50	87
61	53
73	35
59	65
67	82
80	75
83	80
66	62
66	63
96	77
40	60
87	62
71	84
66	82
74	70
73	75
54	87
67	87
58	91
78	93
71	92
65	94
63	68
95	91
60	79
64	82
60	73
60	57
66	99
72	72
82	75
59	75

Answer 1

Excel add-in (Mega Stat) procedure: Step 1 : In EXCEL, Select Add-Ins > Mega Stat > Hypothesis Tests. Step 2: Choose Compare Two Independent Groups. Step 3: Choose Data Input. Step 4: In Group 1: enter the column of Males. Step 5: In Group 2: enter the column of Females. Step 6: Enter 0 Under Hypothesized difference. Step 7: Check t-test (unequal variance), enter Confidence level as 90.0. Step 8: Choose not equal in alternative. Step 9. - Click OK_ Excel add-in (Mega Stat) output: Thus the 90% confidence estimate of the mean pulse