21. What is the mean of the sampling distribution of the sample mean?A. 24в. 30С. 36D. 4222. What is the variance of the sampling distribution of the sample mean?A. 0.096В. 0.2304C. 0.48D. 123. What is the probability that the shelf life of the random sample of size 25 is lessthan 36.5 hours?A. 0.8485B. 0.8508C. 0.8531D. 0.855424. What is the probability that the average shelf life of a random sample of size 25is greater than 35 hours?A. 1B. 0.9912C. 0.9812D. 0.971225. What is the probability that the shelf life of the random sample of size 25 isbetween 35 to 37 hours?A. 0.8941B. 0.8961C. 0.8972D. 0.898326. What is the best point estimate of the population mean?A. the sample standard deviationB. the sample meanC. the sample medianD. the sample mode27. What is the range of values that contains the parameter value?A. Confidence limitsB. Confidence levelC. Confidence intervalD. Confidence coefficient28. Which of the following are the 95% confidence coefficients?A. 11.645B. 11.96C.+2.33D. 12.5829. When n 2 30 and the population standard deviation is not known, what is theappropriate distribution?A.PB.rD. :30. Given n = 100, X = 80, s = 3.2, which of these is the point estimate of thepopulation mean?А. 3.2B. 8.9C. 80D. 100 For numbers 13-15, refer to the probability distribution below.24P(X)1113. What should be the value of k to complete the probability distribution?A.OB.D.14. What is the mean of the probability distribution?A. 3.5В. 4C. 4.5D. 515. What is the variance of the probability distribution?A. 2.58В. 3.64C. 4D. 6.67For number 16 - 20, refer to following problem. The time it takes for Grade 11 students in acertain school to complete a physical fitness test is normally distributed with mean 15minutes and a standard deviation of 4 minutes.16. What is the corresponding z-score of 12.5 minutes?A. -0.63В. - 0.62C. 0.62D. 0.6317. What is the probability that a student completes the physical fitness less than 14minutes?A. 40.52%B. 40.13%C. 39.74%D. 39.36%18. What is the longest time to complete the test of a student whose time belong tothe middle 60% of all recorded times?A. 11.64 minВ. 16 minC. 17.53 minD. 18.36 min19. What is the fastest completion time of the students who belongs to the longest25% of all completion times?A. 17.68 minВ. 17.66 minC. 17.64 minD. 17.62 min20. If the students who get the fastest 5% completion times will be exempted fromthe additional gym workout session, what is the slowest time that a student canhave to qualify for the exemption?A. 8.40 minB. 8.42 minC. 8.44 minD. 8.46 minFor numbers 21 - 25, refer to the following problem. Suppose that the shelf life of Bukopies has a normal distribution with a mean of 36 hours and a standard deviation of 2.4hours. Random samples of size 25 are taken.

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Description: 21. What is the mean of the sampling distribution of the sample mean?A. 24в. 30С. 36D. 4222. What is the variance of the sampling distribution of the sample mean?A. 0.096В. 0.2304C. 0.48D. 123. What is the probability that the shelf life of the rand

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2 4 6 8 P(X) 1 13. What should be the value of k to complete the probability distribution? B. D. A.O

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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