A random variable is binomially distributed with n= 16 and 7 = .40. The expected value and standard deviation of the variables areearchMultiple Choice2.00 and 1.24.4.80 and 4.00.6.40 and 1.96.2.00 and 1.20.Et< Prev17 of 19F---Next >?HelpSave & E89°F Sunny

A random variable is binomially distributed with and .

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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 number of gallons of milk sold per day at a local supermarket are normally distributed with mean and standard deviation of 424.7 and 21.47, respectively. What is the probability that on a given day the supermarket will sell above 440 gallons of milk?
Consider a normally distributed random variable X with a mean of 85 and standard deviation of 10. Find ? The probability that a patient recovers from a rare blood disease is 0.4. If 15 people are known to have contracted this disease, what is the probability that 3 to 8 will survive?
An electrical firm manufactures light bulbs that have a length of life that is normally distributed with mean equal to 787 hours and a standard deviation of 41 hours. Find the probability that a bulb burns between 769 and 806 hours. 0.3228 0.33 0.6772 0.3473
Weight of goods shipped in containers of a certain size is a normally distributed random variable. It is known that 78% of the containers have a net weight above 4.3 tons, and 83% of the containers have net weight below 5.9 tons. Find the mean and standard deviation of the net weight of the containers.
Last year, a person wrote 118 checks. Let the random variable x represent the number of checks he wrote in one day, and assume that it has a Poisson distribution. What is the mean number of checks written per day? What is the standard deviation? What is the variance?
Calculate the mean and variance for the binomial distribution, n=19, P =0.18
The taxi and takeoff time for commercial jets is a random variable x with a mean of 8.2 minutes and a standard deviation of 3.2 minutes. Assume that the distribution of taxi and takeoff times is approximately normal. You may assume that the jets are lined up on a runway so that one taxies and takes off immediately after the other, and that they take off one at a time on a given runway. (a) What is the probability that for 36 jets on a given runway, total taxi and takeoff time will be less than 320 minutes? (Round your answer to four decimal places.)(b) What is the probability that for 36 jets on a given runway, total taxi and takeoff time will be more than 275 minutes? (Round your answer to four decimal places.)(c) What is the probability that for 36 jets on a given runway, total taxi and takeoff time will be between 275 and 320 minutes? (Round your answer to four decimal places.)
The life of a Radio Shack record player is normally distributed with a mean of 3.3 years and a standard deviation of 0.8 years. Radio Shack guarantees its record players for 2 years.Find the probability that a record player will break down during the guarantee period. 0.05208 0.06302 0.05729 0.04218 0.03796 0.03417 0.04687
For normally distributed random variables, how would one verify the empirical rule percentages using z scores? Multiple choice question. Find P(-2 ≤ Z ≤ 2) from a standard normal table and compare to 68%. Find P(-1 ≤ Z ≤ 1) from a standard normal table and compare to 95%. Find P(-2 ≤ Z ≤ 2) from a standard normal table and compare to 99.7%. Find P(-1 ≤ Z ≤ 1) from a standard normal table and compare to 68%.
You studied a third CPU and found that its speed is a continuous random variable that follows a normal distribution, with a mean value of 3.6 GHz and a standard deviation of 0.8 GHz. Find the probability that the third CPU would run faster than the expected speed of CPU1.
At a large manufacturing company the mean age of workers is 37 years, and the standard deviation is 6. Assume the variable is normally distributed. If a random sample of 44 workers is selected, what is the probability that the mean age of the workers in the sample is between 36 and 40 years.
The number of tickets purchased by an individual for Beckham College’s holiday music festival is a uniformly distributed random variable ranging from 6 to 15. find standard deviation

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A random variable is binomially distributed with n= 16 and 7 = .40. The expected value and standard deviation of the variables are Multiple Choice 2.00 and 1.24. 4.80 and 4.00. 6.40 and 1.96. 2.00 and 1.20.