(Answered) Suppose that gpa of high school students in columbia

Statistics

Suppose that GPA of high school students in columbia approximately follows a normal distribution with mean 3.05 and standard deviation 0.4.

(A) What is the probability that a randomly selected student has a GPA higher than 3.5?

(B) For a random sample of 15 students, what is the probability that the average GPA of this sample will be between 3.0 and 3.3?

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