2) A study was conducted to determine the effect of cigarette smoking on the carbon monoxide diffusing capacity of the lungs. The carbon monoxide diffusing capacities for a random sample of 20 current smokers are listed below. 106 76 109 121 98 93 85 93 98 74 95 89 73 76 62 104 108 79 103 85 Note: Round off the standard deviation to two decimal places. Construct a 90% confidence interval for the mean carbon monoxide diffusing capacity of current smokers. Interpret the result. Based on the interval in (a), would you agree that the mean diffusing capacity could be 95? Explain and elaborate.

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2) A study was conducted to determine the effect of cigarette smoking on the carbon monoxide diffusing capacity of the lungs. The carbon monoxide diffusing capacities for a random sample of 20 current smokers are listed below.

106

76

109

121

98

93

85

93

98

74

95

89

73

76

62

104

108

79

103

85

Note: Round off the standard deviation to two decimal places.

  1. Construct a 90% confidence interval for the mean carbon monoxide diffusing capacity of current smokers. Interpret the result.
  2. Based on the interval in (a), would you agree that the mean diffusing capacity could be 95? Explain and elaborate.
  3.  
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