A social worker conducted an 8-week assertiveness trainingworkshop. Afterward, the 14 client took the Door ManifestAssertiveness Test, which has a national mean = 24.0. Use

the data below to construct a 95 percent confidence intervalabout the sample mean.

   24    25    31    25    33    29    21   22    23    32    27    29    30    27

Compute the mean.

Compute ????#.

Compute the standard error of the mean.

Set ?, compute degrees of freedom, and find a t-value.

Compute a confidence interval.

Write a conclusion about the effectiveness of the workshop.