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Lets assume that the midterm grade of students in an English course is normally distributed with mean 80 and standard deviation 8. (a) What is

Lets assume that the midterm grade of students in an English course is normally distributed with mean 80 and standard deviation 8.

(a) What is minimum grade that a student needs to be the top 3% of all students.

(b) What is he probability that the sampling error made in estimating the population mean grade of all students by the mean grade of a sample of 16 students will be at most 2?

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