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StatisticsQ&A LibraryThe pulse rates of 161 randomly selected adult males vary from a low of37 bpm to a high of 97 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want 95%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 σ.Assume that σ=13.7 bpm, based on the value s=13.7 bpm from the sample of 161male pulse rates.c. Compare the results from parts (a) and (b). Which result is likely to be better?Question

Asked Mar 26, 2020

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The pulse rates of 161 randomly selected adult males vary from a low of

37 bpm to a high of 97 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want 95%

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 σ.Assume that σ=13.7 bpm, based on the value s=13.7 bpm from the sample of 161

male pulse rates.

c. Compare the results from parts (a) and (b). Which result is likely to be better?

Step 1

The provided information are:

Step 2

(a)

To compute the sample size, standard deviation is required which can be calculated as:

Now, the sample size can be calculated as:

Step 3

(b)

Given:

σ=13.7

The sample size can be calculated as:

...

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