(Answered) Find the more for the pay rates in the given

Economics

Find the more for the pay rates in the given frequency

hourly rate: 8:50, 11, 15, 19.50

frequency: 7, 5,10,4

In math course the average final exam score is 84 with a standard deviation of 5. Find the test score that corresponds to a z score of 2.3

A survey car rental agency shows the average cost of a car rental is 0.35 per mile. The standard deviation is .05 approximately what percent of consumers pay more than .40 per mile ? Use empirical normal rule.

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