gracezastrow26 gracezastrow26

08-01-2020
Mathematics

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the grades recieved by 300students follow a normal distribution. the mean of the grades is 75% and the standard deviation is 8%.A. how many students recieved a grade greater than 75%? B. how many students recieved a grade higher than 91%?

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westportfootball123 westportfootball123

08-01-2020

Answer:

Correct answers ended up being 6.7% for an A. 100- 93.32= 6.68 round one place 6.7 %

For B it's 93.32 - 69.1463 = 24.17 round one place so 24.2%

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