Consider a sample: 4 1 2 2 1 2 2 1 0 3 1. Determine the sample mean and standard deviation. Develop a 95 percent confidence interval for the...

Consider a sample:

4

1

2

2

1

2

2

1

0

3

1. Determine the sample mean and standard deviation.

2. Develop a 95 percent confidence interval for the population mean.

3. Interpret the result.

4. Explain why the t-distribution is used as a part of the confidence interval.