Example 2 Ð Repeated
Measures
You are interested in the effects
of a new diabetes drug for
pre-teen girls. You take a sample of blood from a group of 14 Caucasian 12-year old girls then give them a dosage of the drug. The girls spend the day together and eat the same meals. They monitor their insulin levels during the day as usual. At the end of the day, you take another sample of blood. The data consists of 14 pairs of pre and post insulin levels. The H0 is that the
new drug did not affect the insulin levels.
The H1 is that
after the new drug, the girlsÕ insulin
level will decrease.
100
29
Rachel
85
26
Kayla
89
24
Lauren
75
16
Emily
101
26
Hannah
99
30
Stephanie
103
37
Samantha
112
38
Cindy
105
32
Megan
97
27
Sarah
111
31
Amanda
90
25
Jessica
86
22
Ashley
100
34
Brittany
D2
D
Post test
Pre test
Name
Insulin Level