It Is Commonly Expected That as a Person Ages, Their

Multiple Choice

It is commonly expected that as a person ages, their muscle mass decreases. To further examine this relationship in women, a nutritionist randomly selected 60 female patients from her clinic, 15 women from each 10-year age group beginning with age 40 and ending with age 80. For each patient, her age and current muscle mass was recorded. A scatterplot, least squares regression line, and coefficient of determination are as follows.
-How would you simulate one sample, assuming the null hypothesis is true?

A) Label cards with muscle mass values from the original data. Mix cards together; shuffle into two new groups of age 40 and age 80.
B) Label cards with muscle mass values from the original data. Mix cards together, and deal one muscle mass value to each of the age values in the data.
C) Flip a coin for each woman in the sample; if heads, swap the difference between age and muscle mass.
D) Label cards with age values from the original data. Mix cards together; shuffle into two new groups of low and high muscle mass.