SOLUTION: This is a confidence interval question
A company manufactured a new type of lamp. A sample of 15 lamps is tested and sample mean was to be found 2500 hours and standered deviation
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A company manufactured a new type of lamp. A sample of 15 lamps is tested and sample mean was to be found 2500 hours and standered deviation
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Question 873675: This is a confidence interval question
A company manufactured a new type of lamp. A sample of 15 lamps is tested and sample mean was to be found 2500 hours and standered deviation is 250 hours,determine 90% confidence interval for mean life of lamp Answer by ewatrrr(24785) (Show Source):
