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A distribution of values is normal with a mean of 130 and a standard deviation of...

A distribution of values is normal with a mean of 130 and a standard deviation of 27. From this distribution, you are drawing samples of size 31.

Find the interval containing the middle-most 84% of sample means:

Enter your answer using interval notation in the form (a,b). In this context, either inclusive or exclusive intervals would be acceptable. Your numbers should be accurate to 1 decimal places. Answers obtained using z-scores rounded to 2 decimal places are accepted.

Math   Statistics-And-Probability   
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