Question

value: 4
a random number generator was used to resample the group. use the new table below to answer the questions.
cholesterol in mg/dl
new control: 220, 245, 247, 230, 243, 218, 245, 240, 224, 232
new treatment: 225, 248, 221, 242, 235, 246, 250, 224, 241, 242
what is the difference in the new treatment mean and new control mean? round to the nearest tenth.
a. 5.8
b. -2
c. -1.4
d. 3

Explanation:

Step1: Calculate control sum

$220 + 245 + 247 + 230 + 243 + 218 + 245 + 240 + 224 + 232 = 2344$

Step2: Find control mean

$\text{Control Mean} = \frac{2344}{10} = 234.4$

Step3: Calculate treatment sum

$225 + 248 + 221 + 242 + 235 + 246 + 250 + 224 + 241 + 242 = 2374$

Step4: Find treatment mean

$\text{Treatment Mean} = \frac{2374}{10} = 237.4$

Step5: Compute mean difference

$\text{Difference} = 237.4 - 234.4 = 3.0$

Answer:

d. 3