Question

The scores on a test are normally distributed with a mean of 140140 and a standard deviation of 2828. what is the score that is 2 and one half2 1 2 standard deviationsdeviations aboveabove the​ mean?

Answer 1

Using the formula:

`z=(X-\mu)/(\sigma)`

`2.5=(X-140140)/(2828)`
X = 140140 + 2.5 *2828 = 147210