Suppose the scores on a trivia quiz are normally distributed with a mean of 80 and a standard deviation of 5.

Which group describes 16% of the population of trivia quiz scores?

scores below 70

scores below 75

scores above 83

scores above 90

Guest Apr 22, 2021

#1**0 **

Look for z - score corresponding to .1600 ( or approximately I find - .99 )

How many Standard Deviations is this ? (.99) multiply the S.D. * 5 and subtract from 80 to find the score ... can you finish...?

ElectricPavlov Apr 22, 2021