The pulse rates of 150 randomly selected adult males vary from a low of 36 bpm to a high of 104 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 tangle of thumb to estimate σ n=____ (Round up to the nearest whole number as needed) b) Assume that σ=10.1 bpm, based on the value s=10.1 bpm from the sample of 150 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 of part (a) is (larger than/ smaller than/the same size as) the result from part (b). The result from part (a/b) is likely to be better because _____________.
The pulse rates of 150 randomly selected adult males vary from a low of 36 bpm to a high of 104 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 tangle of thumb to estimate σ
n=____
(Round up to the nearest whole number as needed)
b) Assume that σ=10.1 bpm, based on the value s=10.1 bpm from the sample of 150 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 of part (a) is (larger than/ smaller than/the same size as) the result from part (b). The result from part (a/b) is likely to be better because _____________.
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