Shape-Up-By-Susie Claims That Participating in Her Exercise Program Will Result $T$

question 55

Multiple Choice

Shape-Up-By-Susie claims that participating in her exercise program will result in guaranteed weight loss in just 6 weeks. Five clients weighed themselves before and then
Again after participating in her program and the differences "weight after - weight
Before" were analyzed. The relevant output is shown below. At the 0.05 level of
Significance, the correct conclusion is Paired $T$ for After - Before
$\begin{array} { l c r r r } & \mathrm { N } & \text { Mean } & \text { StDev } & \text { SE Mean } \\ \text { After } & 5 & 144.6 & 31.7 & 14.2 \\ \text { Before } & 5 & 148.0 & 28.9 & 12.9 \\ \text { Difference } & 5 & - 3.40 & 3.51 & 1.57 \end{array}$
$95 \div$ upper bound for mean difference: $- 0.06$
T-Test of mean difference $= 0 ( \mathrm { vs } < 0 ) : \mathrm { T }$ -Value $= - 2.17$ P-Value $= 0.048$

• A) Reject the null hypothesis.
• B) Do not reject the null hypothesis.
• C) Susie's claim is supported by the sample evidence.
• D) Both A and C.
• E) Both B and C.

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Definitions:

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The period following the American Civil War, marked by reconstruction efforts, societal transformation, and attempts to address the rights of formerly enslaved individuals.

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