Question

x 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. Click on the datafile logo to reference the data. DATA file 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

Answer 1

To determine if the population mean rate of residential water charged by U.S. public utilities is different from Tulsa's rate, hypothesis tests can be formulated.

Step-by-step explanation:

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, we can formulate hypothesis tests.

The null hypothesis (H0) can be stated as: The population mean rate per 5 CCF of residential water charged by U.S. public utilities is equal to $21.62.

The alternative hypothesis (Ha) can be stated as: The population mean rate per 5 CCF of residential water charged by U.S. public utilities differs from $21.62.

We can use statistical tests such as t-tests or z-tests to determine if there is significant evidence to reject the null hypothesis and conclude that the population mean rate per 5 CCF of residential water charged by U.S. public utilities is different from $21.62.