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Problem 4 Hypothesis Testing for onecontinuous outcomeThe NCHS-reported mean total cholesterol level was 203 in2002 for all adults15 patients are enrolled in a 6-week study to test the efficacy ofa new druggne-tauled LewertailIs the drug effective in the reduction ofcholesterol compared to the historicalAt the end of 6 weeks:-n 15- X 195.9mean?Complete the five step hypothesistesting procedure.- s 28.7JONES& BARTLETT LEARNING2011 Jones & Bartlett Learning, LLCwww.jbleaming.comChart Your Own Course

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Problem 4 Hypothesis Testing for one
continuous outcome
The NCHS-reported mean total cholesterol level was 203 in
2002 for all adults
15 patients are enrolled in a 6-week study to test the efficacy of
a new drug
gne-tauled Lewertail
Is the drug effective in the reduction of
cholesterol compared to the historical
At the end of 6 weeks:
-n 15
- X 195.9
mean?
Complete the five step hypothesis
testing procedure.
- s 28.7
JONES& BARTLETT LEARNING
2011 Jones & Bartlett Learning, LLC
www.jbleaming.com
Chart Your Own Course
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Problem 4 Hypothesis Testing for one continuous outcome The NCHS-reported mean total cholesterol level was 203 in 2002 for all adults 15 patients are enrolled in a 6-week study to test the efficacy of a new drug gne-tauled Lewertail Is the drug effective in the reduction of cholesterol compared to the historical At the end of 6 weeks: -n 15 - X 195.9 mean? Complete the five step hypothesis testing procedure. - s 28.7 JONES& BARTLETT LEARNING 2011 Jones & Bartlett Learning, LLC www.jbleaming.com Chart Your Own Course

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Step 1

The population mean is provided as 203 for total cholesterol level in 2002 for all the adults. The provided data is,

n =15
195.9
S 28.7
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n =15 195.9 S 28.7

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Step 2

1. The null and the alternative hypotheses are;

Ho u 203
H 203
From the above hypotheses, it is clear that it is a left-tailed test.
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Ho u 203 H 203 From the above hypotheses, it is clear that it is a left-tailed test.

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Step 3

2. The t-statistic can be...

195.9 203
28.7
15
=-0.958
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195.9 203 28.7 15 =-0.958

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Hypothesis Testing

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