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A manufacturer claims that the average lifetime of his new 60-watt light bulb exceeds 1200 hours, which is the average lifetime of the buibs produced by his main competitor. A life-test of a random sample of 101 of these new bulbs produced a sample mean lifetime of 1250.33 hours and standard deviation of 103.01 hours. Test at a = 0.01 if there is sufficient evidence to support the manufacturer's claim. The alternative hypothesis is The test statistic t (keep three decimal points) is The critical value from T table (Table C) is The decision is

A manufacturer claims that the average lifetime of his new 60-watt light bulb exceeds 1200 hours, which is the average lifetime of the buibs produced by his main competitor. A life-test of a random sample of 101 of these new bulbs produced a sample mean lifetime of 1250.33 hours and standard deviation of 103.01 hours. Test at a = 0.01 if there is sufficient evidence to support the manufacturer's claim. The alternative hypothesis is The test statistic t (keep three decimal points) is The critical value from T table (Table C) is The decision is

A First Course in Probability (10th Edition)
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 manufacturer claims that the average lifetime of his new 60-watt light bulb exceeds 1200 hours, which is the average lifetime of the bulbs produced by his main competitor. A life-test of a random sample of 101 of these new bulbs produced a sample mean lifetime of 1250.33 hours and standard deviation of 103.01 hours. Test at a = 0.01 if there is sufficient evidence to support the manufacturer's claim. The alternative hypothesis is The test statistic t (keep three decimal points) is The critical value from T table (Table C) is The decision is
Transcribed Image Text:A manufacturer claims that the average lifetime of his new 60-watt light bulb exceeds 1200 hours, which is the average lifetime of the bulbs produced by his main competitor. A life-test of a random sample of 101 of these new bulbs produced a sample mean lifetime of 1250.33 hours and standard deviation of 103.01 hours. Test at a = 0.01 if there is sufficient evidence to support the manufacturer's claim. The alternative hypothesis is The test statistic t (keep three decimal points) is The critical value from T table (Table C) is The decision is
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