The following sample of n 5 4 scores was obtained from a population with unknown parameters. Scores: 2, 2, 6, 2 a. Compute the sample mean and standard deviation. (Note that these are descriptive...

The following sample of n 5 4 scores was obtained from a population with unknown parameters. Scores: 2, 2, 6, 2

a. Compute the sample mean and standard deviation. (Note that these are descriptive values that summarize the sample data.)

b. Compute the estimated standard error for M. (Note that this is an inferential value that describes how accurately the sample mean represents the unknown population mean.)