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PROBLEM: The average hourly wage of carpenters is normally distributed with a population mean of $62.00...

PROBLEM:

The average hourly wage of carpenters is normally distributed with a population mean of $62.00 and a population standard deviation of $8.00. Calculate the following:

(a) The proportion of carpenters earning between $48 and $50.

(b) The proportion of carpenters earning more than $67.

(c)The proportion of carpenters earning less than $52.

(d) The 85th percentile.

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