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The accounting department at Weston Materials, Inc., a national manufacturer of unattached garages, reports that it takes two construction workers
a mean of 32 hours and a standard deviation of 2 hours to erect the Red barn model. Assume the assembley follow the normal distribution.
a. Determine the z values for 29 and 34 hours. What percent of the garages take between 32 hours and 34 hours to erect?

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