The pulse rates of 167 randomly selected adult males vary from a low of 39 bpm to a high of 119 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 o. n= (Round up to the nearest whole number as needed.) b. Assume that o = 11.5 bpm, based on the value s = 11.5 bpm from the sample of 167 male pulse rates. n=O (Round up to the nearest whole number as needed.) c. Compare the results from parts (a) and (b). Which result is likely to be better? The result from part (a) is V the result from part (b). The result from V is likely to be better because
The pulse rates of 167 randomly selected adult males vary from a low of 39 bpm to a high of 119 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 o. n= (Round up to the nearest whole number as needed.) b. Assume that o = 11.5 bpm, based on the value s = 11.5 bpm from the sample of 167 male pulse rates. n=O (Round up to the nearest whole number as needed.) c. Compare the results from parts (a) and (b). Which result is likely to be better? The result from part (a) is V the result from part (b). The result from V is likely to be better because
Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter29: Tolerance, Clearance, And Interference
Section: Chapter Questions
Problem 16A: Spacers are manufactured to the mean dimension and tolerance shown in Figure 29-12. An inspector...
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Transcribed Image Text:The pulse rates of 167 randomly selected adult males vary from a low of 39 bpm to a high of 119 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 o.
n =
(Round up to the nearest whole number as needed.)
b. Assume that o = 11.5 bpm, based on the value s = 11.5 bpm from the sample of 167 male pulse rates.
n =
(Round up to the nearest whole number as needed.)
c. Compare the results from parts (a) and (b). Which result is likely to be better?
The result from part (a) is
the result from part (b). The result from
is likely to be better because
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