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A company claims that the mea consumption of 930 kWh. Assume the population standard deviation is 123 kWh. At a=0.10, can you support the claim? Complete parts (a) through (e). nonthly (a) Identify Ho and H. Choose the correct answer below. O A. Ho: uS930 H:u> 930 (claim) B. Ho: uS 890 Hu> 890 (daim) OC. Ho: u> 930 (claim) O D. Ho: u=930 Hu930 (claim) H:us 930 OF Ho: u>890 (claim) Hus 890 O E. Ho: u= 890 (claim) H:u890 (b) Find the critical value(s) and identify the rejection region(s). Select the correct choice below and fill in the answer box within your choice. Use technology (Round to two decimal places as needed.) A. The critical value is 1.28 O B. The critical values are t. Identify the rejection region(s). Select the correct choice below. O A. The rejection regions are z< -1.28 and z> 1.28. O B. The rejection region is z> 1.28. O C. The rejection region is z<1.28.

A company claims that the mea consumption of 930 kWh. Assume the population standard deviation is 123 kWh. At a=0.10, can you support the claim? Complete parts (a) through (e). nonthly (a) Identify Ho and H. Choose the correct answer below. O A. Ho: uS930 H:u> 930 (claim) B. Ho: uS 890 Hu> 890 (daim) OC. Ho: u> 930 (claim) O D. Ho: u=930 Hu930 (claim) H:us 930 OF Ho: u>890 (claim) Hus 890 O E. Ho: u= 890 (claim) H:u890 (b) Find the critical value(s) and identify the rejection region(s). Select the correct choice below and fill in the answer box within your choice. Use technology (Round to two decimal places as needed.) A. The critical value is 1.28 O B. The critical values are t. Identify the rejection region(s). Select the correct choice below. O A. The rejection regions are z< -1.28 and z> 1.28. O B. The rejection region is z> 1.28. O C. The rejection region is z<1.28.

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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A company claims that the mean monthly residential electricity consumption in a certain region is more than 890 kiloWatt-hours (kWh). You want to test this claim. You find that a random sample of 68 residential customers has a mean monthly consumption of 930 kWh. Assume the population standard deviation is 123 kWh. At a =0.10, can you support the claim? Complete parts (a) through (e). (a) Identify Ho and H. Choose the correct answer below. O A. Ho: uS 930 H:u> 930 (claim) B. Ho: uS 890 H:p> 890 (claim) OC. Ho: u> 930 (claim) O D. Ho: u= 930 H u# 930 (claim) H:us 930 O E. Ho: u= 890 (claim) OF Ho: u>890 (claim) Hus 890 H:u#890 (b) Find the critical value(s) and identify the rejection region(s). Select the correct choice below and fill in the answer box within your choice. Use technology. (Round to two decimal places as needed.) A. The critical value is 1.28. O B. The critical values are t. Identify the rejection region(s). Select the correct choice below. O A. The rejection regions are z< -1.28 and z>1.28. O B. The rejection region is z> 1.28. O C. The rejection region is z< 1.28.
Transcribed Image Text:A company claims that the mean monthly residential electricity consumption in a certain region is more than 890 kiloWatt-hours (kWh). You want to test this claim. You find that a random sample of 68 residential customers has a mean monthly consumption of 930 kWh. Assume the population standard deviation is 123 kWh. At a =0.10, can you support the claim? Complete parts (a) through (e). (a) Identify Ho and H. Choose the correct answer below. O A. Ho: uS 930 H:u> 930 (claim) B. Ho: uS 890 H:p> 890 (claim) OC. Ho: u> 930 (claim) O D. Ho: u= 930 H u# 930 (claim) H:us 930 O E. Ho: u= 890 (claim) OF Ho: u>890 (claim) Hus 890 H:u#890 (b) Find the critical value(s) and identify the rejection region(s). Select the correct choice below and fill in the answer box within your choice. Use technology. (Round to two decimal places as needed.) A. The critical value is 1.28. O B. The critical values are t. Identify the rejection region(s). Select the correct choice below. O A. The rejection regions are z< -1.28 and z>1.28. O B. The rejection region is z> 1.28. O C. The rejection region is z< 1.28.
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