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 amount lost after one week on this diet. Is this an unbiased estimate of the population mean? Explain.b.Find a point estimate for the variance of the amount lost on this diet. Is this an unbiased estimate of the population variance? Explain.c.Find a point estimate for the standard deviation of the amount lost on this diet.
What will be an ideal response?
| a. | 2.5; Yes; E( ) = ? |
| b. | 2.389; Yes; E(s2) = ?2 |
| c. | 1.546 |
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