The range rule of thumb was used to find the standard deviation there was a sample size of n=55 and then a population standard deviation of 10.8 was used based on the sample standard deviation of 10.8 to be get n=29. Which result is likely to be better?

The pulse rates of 171 randomly selected adult males vary from a low of 42 bpm to a high of 102 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 bom of the population mean. Complete parts (a) through (c) below. ( 'nAnAAll SR. IANIIInII AIQIIM ISAIPALI AIn m dn nunQu) 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