.A company produces a light bulb that lasts for 1,200 hours. Periodically, the company gets complaints that the life of these bulbs is much less than stated. To test this claim, the company randomly sampled 80 bulbs and found that the average hours for this type of bulb is 1,150 hours with a standard deviation of 150 hours. Calculate the appropriate test statistic. A) t= -2.98 B) t= -3.38 C) t = -5.812 D) t= -25.333

.A company produces a light bulb that lasts for 1,200 hours. Periodically, the company gets complaints that the life of these bulbs is much less than stated. To test this claim, the company randomly sampled 80 bulbs and found that the average hours for this type of bulb is 1,150 hours with a standard deviation of 150 hours. Calculate the appropriate test statistic. A) t= -2.98 B) t= -3.38 C) t = -5.812 D) t= -25.333

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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