Answered: 14. Which of the following can serve as…

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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Let X = {Email, In Person, Instant Message, Text Message}; P(Email) = 0.06 P(In Person) = 0.55 P(Instant Message) = 0.24 P(Text Message) = 0.15 Is this model a probability distribution? A. Yes. B. No. C. Maybe.
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What is the probability that a Z-score will be 0.92 or less?
A manufacturer of aspirin claims that the proportion of headache sufferers who get relief with just two aspirins is 63.8%. What is the probability that in a random sample of 580 headache sufferers, less than 59.5% obtain relief? Probability=?
According to the statistics, 22% of cars in the city were at least 12 years old in 2004. Assume that this result holds true for the current population of all cars in the city. Random sample of 500 cars are selected at random. Approximate the probability that 90 to 95 cars are at least 12 years old?
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Is the expected value (mean) of the probability distribution of a random variable always one of the possible values of x from the distribution? ExplainWhy not
The proportion of eligible voters in the next election who will vote for the incumbent is assumed to be 53.5%. What is the probability that in a random sample of 440 voters, less than 48.3% say they will vote for the incumbent? Probability =
There is a bus coming to a bus stop every 10 minutes. The waiting time of any person at the stop is a random variable with a continuous uniform distribution. What is the probability that the waiting time is at most two minutes?
Certain class is attended by 15 females and 16 males. Suppose two students must be selected randomly. Let X denote number of selected females and give a complete probability distribution
What is the probability that a z-score will be 0.92 or more?
Assume 97% of smart phones work (so the probability that a chosen smart phone works is .97). if three smart phones are tested at random, what is the probability that all three work? (three decimal places)

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14. Which of the following can serve as the probability distribution of a ndom variable X? A. P(X) for x =1,2, 3......8 8. В. Р(X) 3+X 3-x for x = 1, 2, 3, 4 C. P(X) for x = 1,2,3......9 6. 3 for x = 1,2,3 5x D. P(X)