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use, on average, less than 46 kilowatt hours?. Assume the population of kilowatt Homs to be normal. Compute t-value. O t= 1.16 Ot=-1.16 O t = 0.135 O t = -0.135

use, on average, less than 46 kilowatt hours?. Assume the population of kilowatt Homs to be normal. Compute t-value. O t= 1.16 Ot=-1.16 O t = 0.135 O t = -0.135

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
Section10.4: Distributions Of Data
Problem 19PFA
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The Edison Electric Institute has published figures on the number of kilowatt hours used annually by various home appliances. It is claimed that a vacuum cleaner uses an average of 46 kilowatts hours per year. If a random sample of 12 Homs included in a planned study indicates that vacuum cleaners use an average of 42 kilowatt hours per year with a standard deviation of 11.9 kilowatts hours, does this suggest at the 0.05 level of significance that vacuum cleaners use, on average, less than 46 kilowatt hours?. Assume the population of kilowatt Homs to be normal. Compute t-value. O t= 1.16 O t= - 1.16 O t = 0.135 O t = -0.135
Transcribed Image Text:The Edison Electric Institute has published figures on the number of kilowatt hours used annually by various home appliances. It is claimed that a vacuum cleaner uses an average of 46 kilowatts hours per year. If a random sample of 12 Homs included in a planned study indicates that vacuum cleaners use an average of 42 kilowatt hours per year with a standard deviation of 11.9 kilowatts hours, does this suggest at the 0.05 level of significance that vacuum cleaners use, on average, less than 46 kilowatt hours?. Assume the population of kilowatt Homs to be normal. Compute t-value. O t= 1.16 O t= - 1.16 O t = 0.135 O t = -0.135
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