Question

6.4.7-T Question Help 125 beats Assume that females have pulse rates that are normally distributed with a mean of p1-73.0 beats per minute and a standard deviation of per minute. Complete parts (a) through (C) below a. If 1 adult female is randomly selected, find the probability that her pulse rate is between 67 beats per minute and 79 beats per minute The probability is (Round to four decimal places as needed.)

Answer 1

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O M = 73 , o= 12.5 Probahity: P (672x479) = P/ 67-73 2 x-u < 79-73) T 12.5 12.5 - p/ -0.48 (Z < 0.48) . =P/240.48) - P(22-0.48) = 0.68439 – 0.31561 - 10.36881 2 x; ~. Normal ( 180.2, 40.1) ;n=50 x = {xi ~ Normal ( 180.2, 4o. 1) a) so, Pl*7140) = P(x-ME 140-180.2 40-H =PLZ - 7.088) = 1- PlzL-7.08). = 1-0 21 = 122, n= 4184 a) Best estimate . P = x = 122 पा84 P = 0.029