An investigator tests a claim that vitamin C alters the severity of common colds. To eliminate variability due to different family environments, pairs of children from the same family are randomly assigned to either a treatment group that receives vitamin C or a control group that receives a placebo. Each child estimates, on a 10 point scale, the severity of their colds during the school year. The following scores were obtained from 10 pairs of children. What should the investigator conclude? (assume two-tailed test) Pair number Vitamin C Placebo 1 2 3 2 5 4 3 7 9 4 0 3 5 3 5 6 7 7 7 4 6 8 5 8 9 1 2 10 3 5
An investigator tests a claim that vitamin C alters the severity of common colds. To eliminate variability due to different family environments, pairs of children from the same family are randomly assigned to either a treatment group that receives vitamin C or a control group that receives a placebo. Each child estimates, on a 10 point scale, the severity of their colds during the school year. The following scores were obtained from 10 pairs of children. What should the investigator conclude? (assume two-tailed test) Pair number Vitamin C Placebo 1 2 3 2 5 4 3 7 9 4 0 3 5 3 5 6 7 7 7 4 6 8 5 8 9 1 2 10 3 5
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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- An investigator tests a claim that vitamin C alters the severity of common colds. To eliminate variability due to different family environments, pairs of children from the same family are randomly assigned to either a treatment group that receives vitamin C or a control group that receives a placebo. Each child estimates, on a 10 point scale, the severity of their colds during the school year. The following scores were obtained from 10 pairs of children. What should the investigator conclude? (assume two-tailed test)
|
Pair number |
Vitamin C |
Placebo |
|
1 |
2 |
3 |
|
2 |
5 |
4 |
|
3 |
7 |
9 |
|
4 |
0 |
3 |
|
5 |
3 |
5 |
|
6 |
7 |
7 |
|
7 |
4 |
6 |
|
8 |
5 |
8 |
|
9 |
1 |
2 |
|
10 |
3 |
5 |
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