What percent of the population have scores above 40?  b) What percent have scores between 30 and 40?

What percent of the population have scores above 40? b) What percent have scores between 30 and 40?

The scores on an exam are normally distributed with µ = 30 and s = 7. (Show your working.)

a) What percent of the population have scores above 40?

b) What percent have scores between 30 and 40?

c) What score will place a student in the top 5% (to 1 decimal place)?


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