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# The shape of the distribution of the time required to get an oil change at a 10 minuteoil change facility is unknown However records indicate that the mean time is 11.2 minutes and standard

The shape of the distribution of the time required to get an oil change at a 10 minuteoil change facility is unknown. However, records indicate that the mean time is 11.2 minutes, and standard deviation is 4.6 minutes.

Suppose a manager agrees to pay each employee a \$50 bonus if they meet a certain goal. On a typical Saturday, the oil-change facility will perform

35 oil changes between 10 A.M. and 12 P.M. Treating this as a random sample, there would be a 10% chance of the mean oil-change time being at or below what value? This will be the goal established by the manager.

There is a 10% chance of being at or below a mean oil-change time of _________ minutes.

Aug 01 2020 View more View Less