Showing 11 to 20 of 455 Questions

(a) Find the mean and variance in Exercise 5.64 of the random variable X representing the number of persons among 2000 that die from the respiratory infection.(b) According to Chebyshev's theorem, there is a probability of at least 3/4 that the number of persons to die among 2000 persons infected will fall within what interval?
0313 
(a) Find the mean and variance in Exercise 5.65 of the random variable X representing the number of persons among 10,000 who make an error in preparing their income tax returns.(b) According to Chebyshev's theorem, there is a probability of at least 8/9 that the number of persons who make errors in preparing their income tax returns among
0251 
(a) In Exercise 5.9, how many of the 15 trucks would you expect to have blowouts?(b) According to Chebyshev's theorem, there is a probability of at least 3/4 that the number of trucks among the next 15 that have blowouts will fall in what interval?
1530 
(a) Suppose that you throw 4 dice, probability that you get at least one 1. Find (b) Suppose that you throw 2 dice 24 times. Find the probability that you get at least one (1, 1), that is, you roll "snake;eyes." [Note: The probability of part (a) is greater than the probability of part (b).]
0252 
(Use computer) Assume that X is a hypergeometric random variable with N = 50, S = 20, and n = 5. Calculate the following probabilities.a. P(X = 2)b. P(X ≥ 2)c. P(X ≤ 3)
09 
A basketball player is fouled while attempting to make a basket and receives two free throws. The opposing coach believes there is a 55% chance that the player will miss both shots, a 25% chance that he will make one of the shots, and a 20% chance that he will make both shots.a. Construct the appropriate probability distribution.b. What i
170 
A binomial probability experiment is conducted with the given parameters. Compute the probability of x successes in the n independent trials of the experiment. n = 10, p = 0.4, x = 3
00 
A binomial probability experiment is conducted with the given parameters. Compute the probability of x successes in the n independent trials of the experiment. n = 15, p = 0.85, x = 12
00 
A binomial probability experiment is conducted with the given parameters. Compute the probability of x successes in the n independent trials of the experiment. n = 40, p = 0.99, x = 38
00 
A binomial probability experiment is conducted with the given parameters. Compute the probability of x successes in the n independent trials of the experiment. n = 50, p = 0.02, x = 3
00
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