A researcher thinks that life time of light bulb has a normal distribution with mean of 3000 hours and variance of 50 hours. In order to construct 80 confidence interval for the mean life time of light bulb randomly selected 16 sample light bulbs mean value 2850 hours and sample variance is hours. Find the confidence interval. (use 2 decimal point)
A researcher thinks that life time of light bulb has a normal distribution with mean of 3000 hours and variance of 50 hours. In order to construct 80 confidence interval for the mean life time of light bulb randomly selected 16 sample light bulbs mean value 2850 hours and sample variance is hours. Find the confidence interval. (use 2 decimal point)
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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A researcher thinks that life time of light bulb has a
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