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ability that at least one of the events occur is mutually independent events and that P(A) = 0.3, P(B) = 0.2, P(C) = 0.4. a. 0.336 b.0.664 c. 0.024 d. 0.976 e. None d. 24 e. None such that 4. A box contains 3 red balls and 5 black balls. Balls are drawn randomly one at a time with replacement from the box. The probability that the third red ball is the seventh ball drawn is. a. 0.169 b.0.282 c. 0.179 d. 0.121 e. None 5. A box contains 20 balls, 13 of them are red and the rest are blur without replacement. The probability of gettin

ability that at least one of the events occur is mutually independent events and that P(A) = 0.3, P(B) = 0.2, P(C) = 0.4. a. 0.336 b.0.664 c. 0.024 d. 0.976 e. None d. 24 e. None such that 4. A box contains 3 red balls and 5 black balls. Balls are drawn randomly one at a time with replacement from the box. The probability that the third red ball is the seventh ball drawn is. a. 0.169 b.0.282 c. 0.179 d. 0.121 e. None 5. A box contains 20 balls, 13 of them are red and the rest are blur without replacement. The probability of gettin

College Algebra
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section: Chapter Questions
Problem 7CC
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pleaseeeee solve question 4, quickly please 

2. How many different four-digit numbers can be formed from the digits 1,2,3,4,5,6,7 such that the first digit 3 or 6 also you cannot repeat the digit a. 240 b.48 c. 120 P(A) 3. If A, B and C are mutually independent events and that P(A) = 0.3, P(B) = 0.2, P(C) = 0.4. The probability that at least one of the events occur is a. 0.336 b.0.664 c. 0.024 a. 0.4 4. A box contains 3 red balls and 5 black balls. Balls are drawn randomly one at a time with replacement from the box. The probability that the third red ball is the seventh ball drawn is. a. 0.169 b.0.282 c. 0.179 d. 0.121 e. None 5. A box contains 20 balls, 13 of them are red and the rest are blue. Three balls are drawn randomly without replacement. The probability of getting at least 1 blue ball is. a) 0.749 b) 0.251 c) 0.479 d) 0521 b. 0.7 c. 0.9 6. The moment generating function of a random variable X M(t) = 0.5 +0.2e+0.2e³ +0.1e³t Then P(-1.5<X<3.4)= d. e-1 7. If the random variable X has a chi-square distribution with degrees of freedom r, and if E(SX+3)=33. find var (X) a. 3.46 b.12 d. 24 c. 36 d. 0.976 d. 6 ve that X has an exponential distribution. If Var (4-4- 20 b.0 0.5 e. None e. None 8. Let X have a negative binomial distribution with rand P=0.6. If the mean of X is 5 then requal b. 0.83 a. 1.8 c. 3 d.9 e. None =20 e) none e. None e. None
Transcribed Image Text:2. How many different four-digit numbers can be formed from the digits 1,2,3,4,5,6,7 such that the first digit 3 or 6 also you cannot repeat the digit a. 240 b.48 c. 120 P(A) 3. If A, B and C are mutually independent events and that P(A) = 0.3, P(B) = 0.2, P(C) = 0.4. The probability that at least one of the events occur is a. 0.336 b.0.664 c. 0.024 a. 0.4 4. A box contains 3 red balls and 5 black balls. Balls are drawn randomly one at a time with replacement from the box. The probability that the third red ball is the seventh ball drawn is. a. 0.169 b.0.282 c. 0.179 d. 0.121 e. None 5. A box contains 20 balls, 13 of them are red and the rest are blue. Three balls are drawn randomly without replacement. The probability of getting at least 1 blue ball is. a) 0.749 b) 0.251 c) 0.479 d) 0521 b. 0.7 c. 0.9 6. The moment generating function of a random variable X M(t) = 0.5 +0.2e+0.2e³ +0.1e³t Then P(-1.5<X<3.4)= d. e-1 7. If the random variable X has a chi-square distribution with degrees of freedom r, and if E(SX+3)=33. find var (X) a. 3.46 b.12 d. 24 c. 36 d. 0.976 d. 6 ve that X has an exponential distribution. If Var (4-4- 20 b.0 0.5 e. None e. None 8. Let X have a negative binomial distribution with rand P=0.6. If the mean of X is 5 then requal b. 0.83 a. 1.8 c. 3 d.9 e. None =20 e) none e. None e. None
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