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i know these are the answers but show work pls 1. On a Statistics final exam, the grades were approximately Grade Score range normal in

i know these are the answers but show work pls

1. On a Statistics final exam, the grades were approximately Grade Score range normal in distribution with a mean of 80 and a standard A 90 or above deviation of 4. 650 students took the final. Use this data and B 80 -90) the table to the right to estimate answers to the following C (70 -80) questions: Fail Below a 70 a. About how many exams received an A grade? b. About how many exams received a B grade? 32 c. About how many exams received a passing grade? 64 6

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