On a standardized exam, the scores are normally distributed with a mean of 200 and a standard deviation of 10. Find the z-score of a person who scored 181 on the exam.

Step-by-step explanation:

We have been that on a standardized exam, the scores are normally distributed with a mean of 200 and a standard deviation of 10. We are asked to find the z-score of a person who scored 181 on the exam.

We will use z-score formula to solve our given problem.

, where,

z = z-score,

x = Random sample score,

= Mean,

= Standard deviation.

Upon substituting our given values in above formula, we will get:

Therefore, the z-score of the person would be .

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation:

use formula for the circle a=3.14

step-by-step explanation: