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(1 point) A medical researcher wants to investigate the amount of time it takes for patients'...

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(1 point) A medical researcher wants to investigate the amount of time it takes for patients headache pain to be relieved af
(1 point) A medical researcher wants to investigate the amount of time it takes for patients' headache pain to be relieved after taking a new prescription painkiller. She plans to use statistical methods to estimate the mean of the population of relief times. She believes that the population is normally distributed with a standard deviation of 25 minutes. How large a sample should she take to estimate the mean time to within 2 minutes with 94% confidence? Sample Size =

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c = u 2 = 6:06 = 25 Z 19 23 0.03 [ 20.0.3)2 =1553 4 -188 orofoon CS Scanned with CamScanner

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