Mathematics, 22.11.2019 22:31 itzia00
The life in hours of a 75-watt light bulb is known to be normally distributed with σ = 25 hours. suppose that you wanted the total width of the two-sided confidence interval on the mean life to be six hours at 95% confidence. what sample size should be used?
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The life in hours of a 75-watt light bulb is known to be normally distributed with σ = 25 hours. sup...
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