Refer to the accompanying data set and construct a 90​% confidence interval estimate of the mean...

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Statistics

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

71

79

82

71

66

94

79

52

75

59

70

58

74

65

77

53

56

54

86

62

66

83

88

52

58

76

89

79

79

86

91

53

70

88

9

61

65

57

96

72

61

38

69

57

98

64

90

67

55

85

85

80

63

75

79

80

56

81

75

64

56

64

55

68

65

64

102

97

73

80

74

42

81

58

79

86

60

61

73

Construct a 90​% confidence interval of the mean pulse rate foradult females.

___ bpm < mu < ___ bpm

​(Round to one decimal place as​ needed.)

Construct a 90​% confidence interval of the mean pulse rate foradult males.

___ bpm < mu < ___ bpm (Round to one decimal place as​needed.)

Compare the results.

A. The confidence intervals do not​ overlap, so it appears thatadult females have a significantly higher mean pulse rate thanadult males.

B. The confidence intervals​ overlap, so it appears that adultmales have a significantly higher mean pulse rate than adultfemales.

C. The confidence intervals​ overlap, so it appears that thereis no significant difference in mean pulse rates between adultfemales and adult males.

D. The confidence intervals do not​ overlap, so it appears thatthere is no significant difference in mean pulse rates betweenadult females and adult males.

Answer & Explanation Solved by verified expert
4.4 Ratings (575 Votes)
The t critical at 010 df n 1 39 is 1685The Confidence Interval is given by MEME t critical s sqrtnForFemales 7398 s 17059 n 40ME 1685 7398 sqrt40 454Lower Limit 6798 454 6944 694 Rounded to 1 decimalplaceUpper Limit 6798 454 7852 785 Rounded to 1 decimalplaceThe 90 Confidence interval is 694 785ForMales 672 s 12403 n 40ME 1685 12403 sqrt40 33Lower Limit 672 33 639Upper Limit 672 33 705The 90 Confidence interval is    See Answer
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