In a study to determine whether counseling could help people lose weight, a sample of people experienced a group-based behavioral intervention, which involved weekly meetings with a trained interventionist for a
Period of six months. The following data are numbers of pounds lost for 14 people. $$\begin{array} { l l l l l l l }
11.7 & 6.9 & 3.3 & 9.8 & 15.3 & 24.7 & 5.2 \
7.9 & 17.2 & 33.6 & 19.4 & 20.2 & 17.8 & 11.7
\end{array}$$ The following is a boxplot for these data. Is it reasonable to assume that the conditions for performing a
Hypothesis test are satisfied?

Question

In a study to determine whether counseling could help people lose weight, a sample of people experienced a group-based behavioral intervention, which involved weekly meetings with a trained interventionist for a
Period of six months. The following data are numbers of pounds lost for 14 people. $$\begin{array} { l l l l l l l } 
11.7 & 6.9 & 3.3 & 9.8 & 15.3 & 24.7 & 5.2 \
7.9 & 17.2 & 33.6 & 19.4 & 20.2 & 17.8 & 11.7
\end{array}$$ The following is a boxplot for these data. Is it reasonable to assume that the conditions for performing a
Hypothesis test are satisfied?

Quizplus · Accepted Answer

The boxplot shows that there are no extreme outliers or major asymmetries in the data, which suggests that the conditions for performing a hypothesis test are satisfied. However, further analysis, such as checking for normality and equal variances, may be necessary before performing a hypothesis test.