(Steps Shown) Margot has found that the mean time to run a job at the college copy center is 12.6 minutes with standard deviation 10 minutes. She selects a random

Question:

Margot has found that the mean time to run a job at the college copy center is 12.6 minutes with standard deviation 10 minutes. She selects a random sample of 64 jobs.

What is the probability that the sample mean copying time is between 14 and 15 minutes?
What is the probability that the sample mean copying time for this sample is between 10 and 12 minutes?

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(Steps Shown) Margot has found that the mean time to run a job at the college copy center is 12.6 minutes with standard deviation 10 minutes. She selects a random

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