A company clalms that the mean monthly residential electricity consumption in a certain region is more than 870 kiloWatt-hours (kWh). You want to test this claim You find that a random sample of 63 residential customers has a mean monthly consumption of 890 kWh. Assume the population standard deviation is 127 kWh. The level of significance a is equal to 0.05. Select the corect option below. ... O A. Fail to reject Ho because the standardized test statistic is in the rejection region. O B. Reject Ho because the standardized test statistic is in the rejection region. O C. Reject H, because the standardized test statistic is not in the rejection region. O D. Fail to reject Ho because the standardized test statistc is not in the rejection region.
A company clalms that the mean monthly residential electricity consumption in a certain region is more than 870 kiloWatt-hours (kWh). You want to test this claim You find that a random sample of 63 residential customers has a mean monthly consumption of 890 kWh. Assume the population standard deviation is 127 kWh. The level of significance a is equal to 0.05. Select the corect option below. ... O A. Fail to reject Ho because the standardized test statistic is in the rejection region. O B. Reject Ho because the standardized test statistic is in the rejection region. O C. Reject H, because the standardized test statistic is not in the rejection region. O D. Fail to reject Ho because the standardized test statistc is not in the rejection region.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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![A company claims that the mean monthly residential electricity consumption in a certain region is more than 870 kiloWatt-hours (kWh). You want to test this claim.
You find that a random sample of 63 residential customers has a mean monthly consumption of 890 kWh. Assume the population standard deviation is 127 kWh.
The level of significance a is equal to 0.05.
Select the correct option below.
O A. Fail to reject Ho because the standardized test statistic is in the rejection region.
O B. Reject H, because the standardized test statistic is in the rejection region.
O C. Reject H, because the standardized test statistic is not in the rejection region.
O D. Fail to reject H, because the standardized test statistc is not in the rejection region.
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Transcribed Image Text:A company claims that the mean monthly residential electricity consumption in a certain region is more than 870 kiloWatt-hours (kWh). You want to test this claim.
You find that a random sample of 63 residential customers has a mean monthly consumption of 890 kWh. Assume the population standard deviation is 127 kWh.
The level of significance a is equal to 0.05.
Select the correct option below.
O A. Fail to reject Ho because the standardized test statistic is in the rejection region.
O B. Reject H, because the standardized test statistic is in the rejection region.
O C. Reject H, because the standardized test statistic is not in the rejection region.
O D. Fail to reject H, because the standardized test statistc is not in the rejection region.
Next
Calculator
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