Do Popular Diets Really Help Customers in the Long-Run? Many

question 74

Multiple Choice

Do popular diets really help customers in the long-run? Many diets help customers lose weight initially only to have the customer add the weight back on after the first few months on the diet. A
Commercially successful diet company conducted a study of twelve randomly selected customers
And measured their weight after before starting the diet and then again after staying with the diet
For a year. The company hoped that the initial weight loss would be sustained after the first year on
The diet. The data is shown below: $\begin{array}{c|c|c}\text { Customer } & \text { Initial } & \text { One Year } \\\hline 1 & 185 & 175 \\2 & 192 & 193 \\3 & 125 & 115 \\4 & 148 & 146 \\5 & 165 & 170 \\6 & 220 & 175 \\7 & 265 & 170 \\8 & 177 & 174 \\9 & 302 & 266 \\10 & 112 & 116 \\11 & 154 & 148 \\12 & 230 & 256\end{array}$

Calculate the test statistic for the Wilcoxon Signed Rank Test to test to determine if the distribution of initial weight is shifted to the right of the distribution of one-year weight.

• A) \(\mathrm { T } _ { + } = 78\)
• B) \(\mathrm { T } _ { + } = 59\)
• C) \(\mathrm { T } _ { - } = 19\)
• D) \(\mathrm { T } _ { + } = 26\)

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Definitions:

Friendship Temperament

An individual's characteristic pattern of behavior and emotional style which influences their approach to friendship and social interactions.

Friendship Skills

The abilities or competencies required to form, maintain, and enhance positive social relationships with peers.

Friendship Understanding

The comprehension and insight into the nature of friendships, including their formation, maintenance, and impact on individual development.

Middle Childhood

A developmental phase, generally between the ages of 6-12, marked by important growth in cognitive, emotional, and social domains.