The pulse rates of 177 randomly selected adult males vary from a low of 40 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 90% confidence that the sample mean is within 3 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= 77 (Round up to the nearest whole number as needed.) b. Assume that o = 11.3 bpm, based on the value s = 11.3 bpm from the sample of 177 male pulse rates. n= (Round up to the nearest whole number as needed.)