 # Explore Random Variables: Examples & Equations

Recent questions in Random variables defazajx 2020-10-26

## A population of values has a normal distribution with $\mu =198.8$ and $\sigma =69.2$. You intend to draw a random sample of size $n=147$. Find the probability that a single randomly selected value is between 184 and 205.1. $P\left(184? Write your answers as numbers accurate to 4 decimal places. Globokim8 2020-10-25

## A population of values has a normal distribution with $\mu =239.5$ and $\sigma =32.7$. You intend to draw a random sample of size $n=139$. Find the probability that a sample of size $n=139$ is randomly selected with a mean greater than 235.9. $P\left(M>235.9\right)=$? Write your answers as numbers accurate to 4 decimal places. Efan Halliday 2020-10-25

## A population of values has a normal distribution with $\mu =120.6$ and $\sigma =48.5$. You intend to draw a random sample of size $n=105$. Find the probability that a sample of size $n=105$ is randomly selected with a mean greater than 114.9. $P\left(M>114.9\right)=$? Write your answers as numbers accurate to 4 decimal places. cistG 2020-10-25

## A normal population has mean $\mu =20$ and standard deviation $\sigma =4$. What proportion of the population is less than 18? facas9 2020-10-23

## A population of values has a normal distribution with $\mu =116.3$ and $\sigma =27.5$. You intend to draw a random sample of size $n=249$. Find the probability that a single randomly selected value is greater than 117.3. $P\left(X>117.3\right)=$? Write your answers as numbers accurate to 4 decimal places. Tabansi 2020-10-21 CheemnCatelvew 2020-10-18