here is the doc of the question

Given a data set of n ordered pairs (each an (x,y)), how many degrees of freedom are there?

 

 

 

Question 2 (Essay Worth 2 points)

Given the confidence interval formula:  

 

a. What is b? 

 

b. What is t*? 

 

c. What is SEb? 

 

 

 

Question 3 (Essay Worth 1 points)

Here are the golf scores of 12 members of a college women's golf team in two rounds of tournament play. (A golf score is the number of strokes required to complete the course, so that low scores are better.) To what extent may we predict the second round score from the first round score? The standard error of the slope is 0.23. 

 

Player123456789101112Round 189

90

87

95

86

81

102

105

83

88

91

79

Round 294

85

89

89

81

76

107

89

87

91

88

80

 

 

a. Find a 95% confidence interval for the slope. 

 

b. Find a 99% confidence interval for the slope

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