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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 66 residential customers has a mean monthly consumption of 920 kWh. Assume the population standard deviation is 130 kWh. At a = 0.05, can you support the claim? Complete parts (a) through (e). (a) Identify Ho and Ha. Choose the correct answer below. Ο Β. Η0: μ= 920 Ha: H#920 (claim) O A. Ho: H>920 (claim) Ha: us 920 O C. Ho: us920 Ha: u> 920 (claim) O D. Ho: µ= 890 (claim) Ha: µ#890 E. Ho: µs 890 Ha: u> 890 (claim) O F. Ho: µ> 890 (claim) Ha:us 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.) O A. The critical value is B. The critical values are ±

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 66 residential customers has a mean monthly consumption of 920 kWh. Assume the population standard deviation is 130 kWh. At a = 0.05, can you support the claim? Complete parts (a) through (e). (a) Identify Ho and Ha. Choose the correct answer below. Ο Β. Η0: μ= 920 Ha: H#920 (claim) O A. Ho: H>920 (claim) Ha: us 920 O C. Ho: us920 Ha: u> 920 (claim) O D. Ho: µ= 890 (claim) Ha: µ#890 E. Ho: µs 890 Ha: u> 890 (claim) O F. Ho: µ> 890 (claim) Ha:us 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.) O A. The critical value is B. The critical values are ±

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
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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 66 residential customers has a mean monthly consumption of 920 kWh. Assume the population standard deviation is 130 kWh. At a = 0.05, can you support the claim? Complete parts (a) through (e). (a) Identify H, and Ha. Choose the correct answer below. O A. Ho: µ> 920 (claim) Ha: µs 920 В. Но: и3D920 Ha: µ#920 (claim) О с. Но: не920 D. Ho: µ= 890 (claim) Ha: H > 920 (claim) Ha: µ#890 E. Ho:µs 890 Ha: µ > 890 (claim) F. Ho: µ> 890 (claim) Ha: us 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.) O A. The critical value is. O B. The critical values are ±
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 66 residential customers has a mean monthly consumption of 920 kWh. Assume the population standard deviation is 130 kWh. At a = 0.05, can you support the claim? Complete parts (a) through (e). (a) Identify H, and Ha. Choose the correct answer below. O A. Ho: µ> 920 (claim) Ha: µs 920 В. Но: и3D920 Ha: µ#920 (claim) О с. Но: не920 D. Ho: µ= 890 (claim) Ha: H > 920 (claim) Ha: µ#890 E. Ho:µs 890 Ha: µ > 890 (claim) F. Ho: µ> 890 (claim) Ha: us 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.) O A. The critical value is. O B. The critical values are ±
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