1 Answer

Suh · Answer 1 · 2023-04-26T17:54:58+0000

Given:

- The Mean:

$\mu=19.9$

- The Standard Deviation:

$\mu=33.1$

You have to find:

You need to find the z-statistic using this formula:

$z=(x-\mu)/(\sigma)$

In this case:

Then:

$z=(8.9-19.9)/(33.1)\approx-0.332$

You need to find:

By symmetry, this is equal to:

Using the Normal Distribution Table, you get:

Hence, the answer is:

Please log in or register to add a comment.