Oil consumption in ounces was tested on a large sample of industrial engines. The average consumptio
Question: Oil consumption in ounces was tested on a large sample of industrial engines. The average consumption is 120 ounces, and the standard deviation of the measurements is 20 ounces. The distribution looks reasonably like a normal curve. Use the normal approximation to estimate the following percentages.
a) (4pts) Calculate the percentage of engines consuming between 100 and 140 ounces.
b) (4pts) Calculate the percentage of engines consuming over 140 ounces.
c) (4pts) Calculate the percentage of engines consuming between 100 and 110 ounces.
d) (4pts) What is the value (ounces) of the 15th percentile consumption?
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Solution Format: Word Document
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