Question 1 (Essay Worth 1 points)

What are the typical null and alternate hypotheses for a significance test on slope?

 

 

 

Question 2 (Essay Worth 1 points)

How many degrees of freedom will you work with?

 

 

 

Question 3 (Essay Worth 1 points)

Can a pretest on mathematics skills predict success in a statistics course? The 55 students in an introductory statistics class took a pretest at the beginning of the semester. The least-squares regression line for predicting the score y on the final exam from the pretest score x was . The standard error of b was 0.38. Test the null hypothesis that there is no linear relationship between the pretest score and the score on the final exam against the two-sided alternative.

 

 

 

Question 4 (Essay Worth 1 points)

Here are the golf scores (again) 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? 

 

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

 

Run a significance test that there is no relationship between the first round and second round scores.

AccountingQueen

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Status NEW Posted 20 Aug 2017 04:08 PM My Price 8.00

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