A set of shirt prices are normally distributed with a mean of 45 dollars and a standard deviation of 5 dollars. What proportion
of shirt prices are between 37 dollars and 59.35 dollars?
1 answer:
Find the z score for each price range:
Z score for 37 = 37-45/5 = -1.6 from z table -1.6 = 0.0548
Z score for 59.35 = 59.35-45/5 = 2.87
From the z table 2.87 = 0.9979
Now to find the proportion between the two prices subtract:
0.9979 - 0.0548 = 0.9431
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