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. LOADING... Click the icon to view the pulse rates for adult females and adult males. Construct a 90​% confidence interval of the mean pulse rate for adult females. nothing bpm less than < mu μ less than < nothing bpm ​(Round to one decimal place as​ needed.) Construct a 90​% confidence interval of the mean pulse rate for adult males. nothing bpm less than < mu μ less than < nothing bpm ​(Round to one decimal place as​ needed.) Compare the results. A. The confidence intervals​ overlap, so it appears that there is no significant difference in mean pulse rates between adult females and adult males. B. The confidence intervals do not​ overlap, so it appears that there is no significant difference in mean pulse rates between adult females and adult males. C. The confidence intervals do not​ overlap, so it appears that adult females have a significantly higher mean pulse rate than adult males. D. The confidence intervals​ overlap, so it appears that adult males have a significantly higher mean pulse rate than adult females. Males   Females
84   78
72   91
50   60
59   68
49   54
64   83
50   79
73   88
53   90
65   55
74   39
58   68
64   87
78   75
83   80
64   65
64   65
97   77
43   59
84   61
72   85
64   85
73   72
74   74
53   89
67   91
54   87
80   93
70   89
63   91
66   67
99   92
58   84
67   78
61   71
57   53
68   97
70   74
87   75
58   78

Answer 1

The statistical software output for this problem is:

Hence,

a) 90% confidence interval for female:

72.6 bpm < < 79.7 bpm

b) 90% confidence interval for male:

63.9 bpm < < 70.6 bpm

c) The confidence intervals do not​ overlap, so it appears that adult females have a significantly higher mean pulse rate than adult males. Option C is correct.