Mathematics, 24.04.2020 02:23, reycaden
The shape of the distribution of the time required to get an oil change at a 15-minute oil-change facility is unknown. However, records indicate that the mean time is 16.2 minutes, and the standard deviation is 3.4 minutes.
(a) What is the probability that a random sample of n = 45 oil changes results in a sample mean time less than 10 minutes?
(b) Suppose the 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 45 oil changes between 10 A. M. and 12 P. M. Treating this as a random sample, what mean oil-change time would there be a 10% chance of being at or below? This will be the goal established by the manager.
Answers: 3
Mathematics, 21.06.2019 23:00, cakecake15
Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?
Answers: 1
The shape of the distribution of the time required to get an oil change at a 15-minute oil-change fa...
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