Your form produces precision engine parts that must conform to
Your form produces precision engine parts that must conform to fairly rigid diameter specifications. Diameters follow a normal distribution with a mean of 125 mm and a standard deviation of 4 mm. What percentage of diameters will be?
a. Between 120 and 130 mm?
b. Between 131 and 133 mm?
c. Less than 136 mm?
d. More than 132 mm?
e. Less than 116 mm?
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