The distribution of mass for United States pennies minted since 1982 is approximately normal with mean 2.5 grams. A random sample of 10 pennies minted since 1982 was selected. The sample had a mean mass of 2.47 grams and a standard deviation of 0.04 gram.

The test statistic for the population mean has which of the following distributions?

Question

contestada

Respuesta :

ACCESS MORE ACCESS MORE ACCESS MORE ACCESS MORE

jadebarretto2003 jadebarretto2003 · Answer 1 · 2021-04-23T02:01:09+02:00

Answer:

D

Explanation:

Answer Link

luisvaschetto luisvaschetto · Answer 2 · 2022-01-20T10:35:34+01:00

The test statistic for the population mean has a t-distribution with 9 degrees of freedom.

The t-distribution is a type of statistical distribution describing standardized distances of sample means to the corresponding population mean.

This distribution (t-distribution) can be used when data are approximately normally distributed.

The degrees of freedom indicate the number of independent observations in the data.

In conclusion, the test statistic for the population mean has a t-distribution with 9 degrees of freedom.

Learn more in:

https://brainly.com/question/16959076