A clinical researcher performs a clinical trial on 12 patients to determine whether a drug treatment has an effect on serum glucose. The sample mean glucose of the patients before and after the treatment are summarized in the following table. The sample standard deviation of the differences was 8. Sample mean glucose (mg/dL)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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A clinical researcher performs a clinical trial on 12 patients to determine whether a drug
treatment has an effect on serum glucose. The sample mean glucose of the patients
before and after the treatment are summarized in the following table. The sample
standard deviation of the differences was 8.
Sample mean
glucose (mg/dL)
Before treatment
96
After treatment
91
What type of hypothesis test should be performed? Select
Select
Left-tailed z-test
Paired t-test
Two-tailed z-test
Unpaired t-test
What is the test statistic?
What is the number of degrees of freedom?
Does sufficient evidence exist to support the claim that the drug treatment has an effect
on serum glucose at the a = 0.01 significance level?
>
Transcribed Image Text:A clinical researcher performs a clinical trial on 12 patients to determine whether a drug treatment has an effect on serum glucose. The sample mean glucose of the patients before and after the treatment are summarized in the following table. The sample standard deviation of the differences was 8. Sample mean glucose (mg/dL) Before treatment 96 After treatment 91 What type of hypothesis test should be performed? Select Select Left-tailed z-test Paired t-test Two-tailed z-test Unpaired t-test What is the test statistic? What is the number of degrees of freedom? Does sufficient evidence exist to support the claim that the drug treatment has an effect on serum glucose at the a = 0.01 significance level? >
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