The scores received by students completing a geology exam are normally distributed. If the average score is 122 and the standard deviation is 35, what percentage of students scored between 52 and 122?

Question

anonymous · Answer

well you would have to find out the other scores

anonymous · Answer

what you see there is all that is given

anonymous · Answer

these are the choices

A: 34.0%

B: 37.5%

C: 42.0%

D: 47.5%

E: 48.0%

vocaloid · Answer

convert 52 and 122 to their respective z-scores using the formula

z-score = (given number-mean)/standard deviation

vocaloid · Answer

then, use a graphing calculator function normalcdf(z-score1,z-score2) or use a z-table to find the corresponding percentages

anonymous · Answer

I would prbab;y go d just sayin

anonymous · Answer

Okay, thanks @Vocaloid

anonymous · Answer

are u using computer because if so it has a graphing calc on it

vocaloid · Answer

@ray-mccloud: if you need to check your answer, you can use this online calculator https://www.easycalculation.com/statistics/normal-distribution.php

anonymous · Answer

or that but it would be quicker to do the that is automatically on yo computer

anonymous · Answer

hey ray I think I figured my problem out but can u check jus to be sure

anonymous · Answer

alright zach but give me a sec while I finish up my problem.