Suppose a researcher is interested in the effectiveness of a new insulin drug at decreasing fasting glucose levels. In this particular study, the research team will use each participant as his own control, offering the participants the study drug either preceding or proceeding a control period involving best standard of care. Assume the following sample off participants enrolled in the study represents an appropriate approximation to the normal distribution.

Participant

Fasting Glucose (mg/dL)

With new drug

Fasting Glucose (mg/dL)

With Best standard care

1

123

134

2

113

129

3

114

128

4

102

123

5

106

127

6

109

134

7

101

124

8

104

121

9

116

131

10

124

137

A)What type of study is this?

B)Carry out a paired-sample t test to investigate the effectiveness at reducing the fasting glucose level with the new insulin drug.Write out the null and alternative hypotheses using an =0.05.

A)Cross-over trial

B)Ho: ₁=₂Ha: ₁>₂

T statistic -11.975 pvalue of ~0 Reject the Ho that the paired population means are equal

A)Comparative study

B)Ho: ₁=₂Ha: ₁>₂

T statistic 9.751 pvalue of ~0.5 Accept the Ho that the paired population means are equal

A)Paired-match

B)Ho: ₁=₂Ha: ₁<₂

T statistic 15.585 pvalue of 0.0001 Reject the Ho that the paired population means are equal