A process that produces bottles of shampoo, when operating correctly, produces bottles whose contents weigh, on average,

Question:

A process that produces bottles of shampoo, when operating correctly, produces bottles whose contents weigh, on average, 20 ounces. A random sample of nine bottles from a single production run yielded the following content weights (in ounces):
21.4 19.719.7 20.6 20.8 20.1 19.7 20.3 20.9
Assuming that the population is normal, test at the 5% level against a two-sided alternative the null hypothesis that the process is operating correctly. 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...