Question

a random number generator was used to resample the group. use the new table below to answer the questions.

	cholesterol in mg/dl
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 new control mean

$\bar{x}_{control}=\frac{220 + 245+247+230+243+218+245+240+224+232}{10}=\frac{2344}{10} = 234.4$

Step2: Calculate new treatment mean

$\bar{x}_{treatment}=\frac{225+248+221+242+235+246+250+224+241+242}{10}=\frac{2374}{10}=237.4$

Step3: Find the difference

$d=\bar{x}_{treatment}-\bar{x}_{control}=237.4 - 234.4=3$

Answer:

d. 3