MA260 statistical analysis 1
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1. A recent article in the Myrtle Beach Sun
Times reported that the mean labor cost to repair a color television is
$90 with a standard deviation of $22. Monte’s TV Sales and Service
completed repairs on two sets this morning. The labor cost for the first
was $75 and it was $100 for the second. Compute z values for
each and comment on your findings.
2. The mean of a normal distribution is
400 pounds. The standard deviation is 10 pounds.
a. What is the area between 415
pounds and the mean?
b. What is the area between the
mean and 395 pounds?
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