women and 18 men. a Mudent is randomly selected, what is the probabilty that stu
ID: 3200024 • Letter: W
Question
women and 18 men. a Mudent is randomly selected, what is the probabilty that student is a even hat or a 21.What is the probability that the spinner wilastoponan number multiple of 3? 3) The table below describes the smoking habits of a group of asthma sufferers. Regular Heavy Nonsmoker smoker smoker smoker Total 37 546 Total 815 132 If one of the 1087 people is randomly selected, find the probability that the person is a man or aheavysmoker. people in the 23-30 age bracket G6 smoke), people in the 31-40 age bracket whom is age If one person is randomly of whom probability of getting someone who selected from this sample, find the 23-30 or smokes. 5) The table below describes the smoking habits of a group of asthma sufferers. Light Nonsmoker smoker smoker Total 46 382 300 412 322 48 42 Men Women 88 794 both Total 622 84 probability that they are If two different people are randomly selected from the 794 find the subjects, women. to decimal places.Explanation / Answer
(1) Total number of events = 25 + 18 = 43
Number of favourable events = 25
So, Probability of a woman = Number of favourable events/Total number of events = 25/43.
(2) Case 1: Stop on an even number:
Total number of events = 21.
Number of favourable events = Number of even numbers between 1 to 21 = 10.
Probability of stopping on even number = 10/21.
Case 2: Multiple of 3:
Number of Multiples of 3 = 7.
Probability of multiple of 3 = 7/21 = 1/3.
So,Probability of even number OR multiple of 3 = 10/21 + 1/3 = 17/21
(3) Probability of a man = 541/1087
Probability of heavy smoker = 72/1087
So, Probability of man OR heavy smoker = 541/1087 + 72/1087 = 613/1087
(4) Probability of age group 23 to 30 = 123/(177+123+93) = 123/393
Probability of smoker = (58+36+25)/393 = 119/393.
Probability of age group 23 to 30 OR smoker = 123/393+119/393 = 242/393.
SINCE THE NUMBER OF QUESTIONS IS LARGE, ONLY FIRST 4 QUESTIONS ARE ANSWERED AS PER DIRECTIONS FOR ANSWERING.
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