Question

The weights of baby giraffes are known to have a mean of 125 pounds and a...

The weights of baby giraffes are known to have a mean of 125 pounds and a standard deviation of 15 pounds.

If we obtained a random sample of 40 baby giraffes,

  1. what is the probability that the sample mean will be between 120 and 130 pounds?
  2. what is the 75th percentile of the sample means of size n=40?

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