Question

he pulse rates of 159 randomly selected adult males vary from a low of 39 bpm...

he pulse rates of

159

randomly selected adult males vary from a low of

39

bpm to a high of

103

bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want

98%

confidence that the sample mean is within

4

bpm of the population mean. Complete parts​ (a) through​ (c) below.

a. Find the sample size using the range rule of thumb to estimate

sigmaσ.

Math   Statistics-And-Probability   
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Answer #1

Refer Standard normal table/Z-table, Lookup for Z-value corresponding to area 0.01 to the left of the normal curve or use excel formula "=NORM.S.INV(0.01)" to find the Z-value.

Use the Range rule of thumb to find the population standard deviation.

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