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.