99% confidence interval results:

Variable	Sample Mean	Std. Err.	DF	L. Limit	U. Limit
TRAINING	3.15	0.36472773	19	2.1065378	4.1934622

Problem 1f Referring to Problem 1e above, use StatCrunch to determine what sample size is required for estimating the population mean relating to Variable 3 (TRAINING) assuming a margin of error equal to 10% of the sample mean and a 99% level of confidence? To answer this, assume that the population standard deviation equals the sample standard deviation, for just this one problem part 1f. Copy and paste the StatCrunch window (which displays the answer) to your Word solutions file under the subheading Problem 1f. Under this window, in the Word solutions document, type in the required minimum sample size.

TRAINING

5

3

7

1

4

1

3

4

5

2

3

5

1

4

3

2

2

1

4

3