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 920 kWh. Assume the population standard deviation is 120 kWh. At a = 0.01, can you support the claim? Complete parts (a) through (e). (a) Identify Ho and H₂. Choose the correct answer below. a- OA. Ho: >890 (claim) Ha: μ≤890 OC. Ho: μ≤920 Ha: μ> 920 (claim) O E. Ho: μ = 920 Ha: μ#920 (claim) O B. Ho: μ≤ 890 Ha: μ> 890 (claim) O D. Ho: μ=890 (claim) Ha: μ#890 OF. Ho: μ> 920 (claim) H₂:μ≤920
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 920 kWh. Assume the population standard deviation is 120 kWh. At a = 0.01, can you support the claim? Complete parts (a) through (e). (a) Identify Ho and H₂. Choose the correct answer below. a- OA. Ho: >890 (claim) Ha: μ≤890 OC. Ho: μ≤920 Ha: μ> 920 (claim) O E. Ho: μ = 920 Ha: μ#920 (claim) O B. Ho: μ≤ 890 Ha: μ> 890 (claim) O D. Ho: μ=890 (claim) Ha: μ#890 OF. Ho: μ> 920 (claim) H₂:μ≤920
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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