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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? Th he rate per 5 CCF of residential water for 42 randomly selected U.S. cities. 10.68 9.38 12 6.7 10.32 14.7 16.38 17.8 17 17.55 15.84 15 18.62 16.25 27.05 22.52 22.96 21.18 23.65 19.25 23.9 19.46 23.95 28 27.25 27.34 27.19 24.88 38.06 26.71 39.21 29.66 41.85 Ho: 12.62 14.73 15.76 19.38 18.18 13.05 (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. ( H₂: 19.11 18.19 15.1 (b) What is the test statistic for your hypothesis test in part (a)? (Round your answer to three decimal places.) What is the p-value for your hypothesis test in part (a)? (Round your answer to four decimal places.) (c) At a = 0.05, can your null hypothesis be rejected? What is your conclusion? O Reject Ho. The mean rate per 5 CCF of residential water throughout the United States does not differ significantly from the rate per 5 CCF of residential water in Tulsa.

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? Th he rate per 5 CCF of residential water for 42 randomly selected U.S. cities. 10.68 9.38 12 6.7 10.32 14.7 16.38 17.8 17 17.55 15.84 15 18.62 16.25 27.05 22.52 22.96 21.18 23.65 19.25 23.9 19.46 23.95 28 27.25 27.34 27.19 24.88 38.06 26.71 39.21 29.66 41.85 Ho: 12.62 14.73 15.76 19.38 18.18 13.05 (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. ( H₂: 19.11 18.19 15.1 (b) What is the test statistic for your hypothesis test in part (a)? (Round your answer to three decimal places.) What is the p-value for your hypothesis test in part (a)? (Round your answer to four decimal places.) (c) At a = 0.05, can your null hypothesis be rejected? What is your conclusion? O Reject Ho. The mean rate per 5 CCF of residential water throughout the United States does not differ significantly from the rate per 5 CCF of residential water in Tulsa.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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You may need to use the appropriate appendix table or technology to answer this question. On its municipal website, the city of Tulsa states that the rate it charges per 5 CCF of residential water is $21.62. How do the residential water rates of other U.S. public utilities compare to Tulsa's rate? The data shown below ($) contains the rate per 5 CCF of residential water for 42 randomly selected U.S. cities. Ho: 10.68 H₂: 9.38 12 6.7 12.62 10.32 14.7 16.38 17.8 19.38 17 17.55 15.84 15 18.62 16.25 27.05 22.52 22.96 14.73 19.25 23.9 19.46 23.95 28 15.76 19.11 18.19 15.1 18.18 13.05 21.18 23.65 27.25 27.34 (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. (Enter != for as needed.) 27.19 24.88 38.06 26.71 39.21 29.66 41.85 (b) What is the test statistic for your hypothesis test in part (a)? (Round your answer to three decimal places.) What is the p-value for your hypothesis test in part (a)? (Round your answer to four decimal places.) (c) At a = 0.05, can your null hypothesis be rejected? What is your conclusion? O Reject Ho. The mean rate per 5 CCF of residential water throughout the United States does not differ significantly from the rate per 5 CCF of residential water in Tulsa. O Do not reject Ho. The mean rate per 5 CCF of residential water throughout the United States does not differ significantly from the rate per 5 CCF of residential water in Tulsa. O Do not reject Ho. The mean rate per 5 CCF of residential water throughout the United States differs significantly from the rate per 5 CCF of residential water in Tulsa. O Reject Ho. The mean rate per 5 CCF of residential water throughout the United States differs significantly from the rate per 5 CCF of residential water in Tulsa.
Transcribed Image Text:You may need to use the appropriate appendix table or technology to answer this question. On its municipal website, the city of Tulsa states that the rate it charges per 5 CCF of residential water is $21.62. How do the residential water rates of other U.S. public utilities compare to Tulsa's rate? The data shown below ($) contains the rate per 5 CCF of residential water for 42 randomly selected U.S. cities. Ho: 10.68 H₂: 9.38 12 6.7 12.62 10.32 14.7 16.38 17.8 19.38 17 17.55 15.84 15 18.62 16.25 27.05 22.52 22.96 14.73 19.25 23.9 19.46 23.95 28 15.76 19.11 18.19 15.1 18.18 13.05 21.18 23.65 27.25 27.34 (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. (Enter != for as needed.) 27.19 24.88 38.06 26.71 39.21 29.66 41.85 (b) What is the test statistic for your hypothesis test in part (a)? (Round your answer to three decimal places.) What is the p-value for your hypothesis test in part (a)? (Round your answer to four decimal places.) (c) At a = 0.05, can your null hypothesis be rejected? What is your conclusion? O Reject Ho. The mean rate per 5 CCF of residential water throughout the United States does not differ significantly from the rate per 5 CCF of residential water in Tulsa. O Do not reject Ho. The mean rate per 5 CCF of residential water throughout the United States does not differ significantly from the rate per 5 CCF of residential water in Tulsa. O Do not reject Ho. The mean rate per 5 CCF of residential water throughout the United States differs significantly from the rate per 5 CCF of residential water in Tulsa. O Reject Ho. The mean rate per 5 CCF of residential water throughout the United States differs significantly from the rate per 5 CCF of residential water in Tulsa.
(d) Repeat the preceding hypothesis test using the critical value approach. State the null and alternative hypotheses. (Enter != for as needed.) Ho: H₂: Find the value of the test statistic. (Round your answer to three decimal places.) State the critical values for the rejection rule. Use a = 0.05. (Round your answers to three decimal places. If the test is one-tailed, enter NONE for the unused tail.) test statistic S test statistic > State your conclusion. O Reject Ho. The mean rate per 5 CCF of residential water throughout the United States does not differ significantly from the rate per 5 CCF of residential water in Tulsa. O Do not reject Ho. The mean rate per 5 CCF of residential water throughout the United States does not differ significantly from the rate per 5 CCF of residential water in Tulsa. O Do not reject Ho. The mean rate per 5 CCF of residential water throughout the United States differs significantly from the rate per 5 CCF of residential water in Tulsa. O Reject Ho. The mean rate per 5 CCF of residential water throughout the United States differs significantly from the rate per 5 CCF of residential water in Tulsa.
Transcribed Image Text:(d) Repeat the preceding hypothesis test using the critical value approach. State the null and alternative hypotheses. (Enter != for as needed.) Ho: H₂: Find the value of the test statistic. (Round your answer to three decimal places.) State the critical values for the rejection rule. Use a = 0.05. (Round your answers to three decimal places. If the test is one-tailed, enter NONE for the unused tail.) test statistic S test statistic > State your conclusion. O Reject Ho. The mean rate per 5 CCF of residential water throughout the United States does not differ significantly from the rate per 5 CCF of residential water in Tulsa. O Do not reject Ho. The mean rate per 5 CCF of residential water throughout the United States does not differ significantly from the rate per 5 CCF of residential water in Tulsa. O Do not reject Ho. The mean rate per 5 CCF of residential water throughout the United States differs significantly from the rate per 5 CCF of residential water in Tulsa. O Reject Ho. The mean rate per 5 CCF of residential water throughout the United States differs significantly from the rate per 5 CCF of residential water in Tulsa.
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