Mathematics Homework Help

I’m working on a statistics question and need an explanation and answer to help me learn.

• A study of the ability of individuals to walk in a straight line reported that accompanying data on cadence (strides per seconds) for a sample of 20 randomly selected healthy men:

.95       .81       .93       .95       .93       .86       1.05     .92       .85       .81

.92       .96       .92       1.00     .78       1.06     1.06     .96       .85       .92

• Create a normal probability plot for the data.  Does your normal probability plot give substantial support to the assumption that the population distribution of cadence is approximately normal?
• Calculate and interpret a 95% confidence interval for a population mean cadence.
• Calculate and interpret a 95% prediction interval for the cadence of a single individual randomly selected from this population