<span>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 18 minutes. How large a sample should she take to estimate the mean time to within 4 minutes with 97% confidence?
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n = [z*s/E]^2
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n = [2.17*18/4]^2 = 96 when rounded up
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To get p add 18 on both side then you will get 56 as p which is the answer
C. 1/6 becuase there are six numbers you could possibly land on and it is facing one side up.
If looking for velocity or speed or miles per hour:
V= 3,360mi/ 6hrs
V= 560mph
