You research commute times to work and find that the population standard deviation is 9.3 minutes. Repeat

Question:

You research commute times to work and find that the population standard deviation is 9.3 minutes. Repeat Exercise 17, using the standard normal distribution with the appropriate calculations for a standard deviation that is known. Compare the results.

Exercise 17

In a random sample of eight people, the mean commute time to work was 35.5 minutes and the standard deviation was 7.2 minutes.

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...