An experimental diet to induce weight loss was followed for one week by a randomly selected group of 12 students with the following results.
|
Student |
Loss in Pounds |
|
1 |
2.2 |
|
2 |
2.6 |
|
3 |
0.4 |
|
4 |
2.0 |
|
5 |
0.0 |
|
6 |
1.8 |
|
7 |
5.2 |
|
8 |
3.8 |
|
9 |
4.2 |
|
10 |
3.8 |
|
11 |
1.4 |
|
12 |
2.6 |
|
a. |
Find a point estimate for the average and the standard deviation for the amount lost after one week on this diet. |
|
b. |
Construct a 90% confidence interval for the population mean amount of weight lost for one week on this diet. |
