Soru 15Let the random variable X shows the number of tires on a randomly selected automobile that are underinflated.The pmf of X is given by;34p(x)0.40.10.10.10.3P(at most 1 tire is under inflated)-?O a. 0.4O b. 0.1O c. 0.5O d. 0.6Oe.0.3

Given data is x 0 1 2 3 4 P(x) 0.4 0.1 0.1 0.1 0.3

Answered: Let the random variable X shows the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Suppose that the speed at which cars go on the freeway is normally distributed with mean 78 mph and standard deviation 6 miles per hour. Let X be the speed for a randomly selected car. Round all answers to 4 decimal places where possible. b. If one car is randomly chosen, find the probability that it is traveling more than 76 mph. __________c. If one of the cars is randomly chosen, find the probability that it is traveling between 77 and 80 mph. ___________d. 60% of all cars travel at least how fast on the freeway?_____________ mph.
Let X be the binomial random variable B(10,0.6). Find E(X2). O A. 36 O B. 2.4 С. 38.4 O D. -33.6 E. 8.4
Which of these is not a probability? (a) 230% (b) 2/3 (c) . 23232323 (d) 2.3% (e) 2:3
1.3 In a recent survey, 10,000 households were randomly selected. One of the questions on the survey asked how many TVs they had. The results are given in the table below. Number of TVs to number of households # of TVs # of Households P(X=x) 0 160 1 3140 2 3790 3 1920 4 780 5 210 Total 10,000 e) What is the average number of TVs in a household?
Which one of these variables is a continuous random variable? Oa. The number of tattoos a randomly selected person has. Ob. The number of correct guesses on a multiple choice test. The time it takes a randomly selected student to complete an exam. Od. The number of women taller than 68 inches in a random sample of 5 women O . None of these
Let X represent the number of tires with low air pressure on a randomly chosen car. The probability distribution of X is as follows. x 0 1 2 3 4 Px 0.1 0.2 0.4 0.2 0.1 find p(1)
O Let x be a random variable that represents the batting average of a professional baseball player. Let y be a random variable that represents the percentage of strikeouts of a professional baseball player. A random sample of n = 6 professional baseball players gave the following information. 0.310 0.340 0.248 0.367 0.269 Conclusion X 0.318 y 2.9 (a) Find Ex, Ey, Ex, Ey, Exy, and r. (Round only r to three decimal places.) Eyl % t Conclusion 7.8 a= Exal (b) Use a 5% level of significance to test the claim that p = 0. (Round your answers to three decimal places.) critical t Ex²=1 4.0 8.6 Ev=l (c) Find S, a, and b. (Round your answers to four decimal places.) b= 3.1 Reject the null hypothesis, there is sufficient evidence that p differs from 0. Reject the null hypothesis, there is insufficient evidence that p differs from 0. Fail to reject the null hypothesis, there is insufficient evidence that p differs from 0. Fail to reject the null hypothesis, there is sufficient evidence that p…
Clear my choice on 3 Suppose a discrete random variable X takes only three values 0, 2 and 3. If P(0)=D0.5, P(2)=0.2 and P(3)=D0.3 then P(X>1) is equal to: et answered ed out of 1.00 Select one: g question O a. 0.3 Ob. 0.2 Oc. 0.5 d. 0 Next pag
Assume that 12 jurors are selected from a population in which 50% of the people are Mexican-Americans. The random variable x is the number of Mexican-Americans on the jury. x 0 1 2 3 4 5 6 7 8 9 10 11 12 P(x) 0.0000.000 0.0030 0.0160 0.0540 0.1210 0.1930 0.2260 0.1930 0.1210 0.0540 0.0160 0.0030 0.0000 A. Find the probability of exactly 2 Mexican-Americans among 12 jurors. P(2)equals= b. Find the probability of 2 or fewer Mexican-Americans among 12 jurors. c. Does 2 Mexican-Americans among 12 jurors suggest that the selection process discriminates against Mexican-Americans? Why or why not?
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Let the random variable X shows the number of tires on a randomly selected automobile that are under inflated.The pmf of X is given by; 1 2 4 p(x) 0.4 0.1 0.1 0.1 0.3 P(at most 1 tire is under inflated)-? O a. 0.4 O b. 0.1 Oc. 0.5 O d. 0.6 O e. 0.3