On its municipal website, the city of Tulsa states that the rate it charges per 5 CCF of residential water is $21.62. How do the residential water rates of other U.S. public utilities compare to Tulsa's rate? The file ResidentialWater contains the rate per 5 CCF of residential water for 42 randomly selected U.S. cities.a.Formulate hypotheses that can be used to determine whether the population mean rate per 5 CCF of residential water charged by U.S. public utilities differs from the $21.62 rate charged by Tulsa.b.What is the p-value for your hypothesis test in part (a)?c.At a=.05, can your null hypothesis be rejected? What is your conclusion?d.Repeat the preceding hypothesis test using the critical value approach.

Mathematics
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