Question

0.4.7-1 Question Help Assume that females have pulse rates that are normally distributed with a mean of u = 75.0 beats per minute and a standard deviation of a = 12.5 beats 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 69 beats per minute and 81 beats per minute. The probability is 0.3688 (Round to four decimal places as needed.) b. If 16 adult females are randomly selected, find the probability that they have pulse rates with a mean between 69 beats per minute and 81 beats per minute. The probability is a (Round to four decimal places as needed.)

Answer 1

let X be the female having pulserate (مراہ حلا ME 75.0 or 12.5 beats per minutes. *&1-75 12.5 @ Bobability that beu pulse rate us betulles 6 9 beats per minutes and 81 beats per minutes. PL69 <x<81) = pl 69-75 5x204 ( 24 ) =pl-0.48222 0:48) - 2PLO <2<0.48 = 2x0.1844 from area under -0.3688 probability is 10.3688 16 adult female are randomly selected lie n-16 12.5 -6 12.5 nouma carne) 24 therefore, Z olun Pl69 < x <81)= p/ 69-75 12.5/ ( 2K 81-75 12.5 FLITE =pl - 6x4 20 18 544) =PL-1,92% 2 < 1.92 - 2 PCO <2< 1.92)

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