abcpEfgh IJ*- - 1gnore otoc.Suppose that the manufacturing of a particular part requires three different machining operations.Machining time (X1, X2, X3) for each of the three operations has a normal distribution and areindependent from one another. The mean values are 10, 12, and 8 minutes respectively, and standarddeviations are 2, 2.5, and 1.5 respectively.a) What is the probability that it takes at most 26 minutes total to produce a randomly selected part?b) What is the probability the difference in machining timing between the second and first operation(X2-X1) exceeds 6 minutes?

Given: μ1=10μ1=12μ1=8s1=2s2=2.5s3=1.5

Answered: Suppose that the manufacturing of a…

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 a college determines the following distribution for X=number of courses taken by a full-time student this semester: Value of X: 3 4 5 6 Probability 0.05. 0.25 0.27 a) The probability for X=4 is missing, What is it? b) What is the average number of courses full-time students at this college take this semester? c) What is the standard deviation of the number of courses full-time students at this college take this semester. d) What is P(X>4.7)
1
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Manufacture of a certain component requires three different machining operations. Machining time for each operation has a normal distribution, and the three times are independent of one another. The mean values are 15, 20, and 30 min, respectively, and the standard deviations are 1, 2, and 1.4 min, respectively. What is the probability that it takes at most 1 hour of machining time to produce a randomly selected component? (Round your answer to four decimal places.)You may need to use the appropriate table in the Appendix of Tables to answer this question.
Suppose that the mean hourly wage of all employees in a large semiconductor manufacturing facility is $50 with a standard deviation of $10. Let X be the mean hourly wages of certain employees selected randomly from all the employees of this manufacturing facility. If a random sample of 64 employees is selected, then the probability that the mean hourly wages X falls between $48 and $52 is: 0.9986 0.8904 0.9544 0.9898
the answer is not 0.0294
Manufacture of a certain component requires three different machining operations. Machining time for each operation has a normal distribution, and the three times are independent of one another. The mean values are 20, 30, and 15 min, respectively, and the standard deviations are 1, 2, and 1.3 min, respectively. What is the probability that it takes at most 1 hour of machining time to produce a randomly selected component? (Round your answer to four decimal places.) In USE SALT
Two normally distributed populations with H4 =µ, and both variances being 100 are given. Random samples of size 25 are taken from each population with respective sample means 104 and 100. What is the probability of observing a difference of at least 4 units between the first and second sample means? Select one: O a.None b.0.1271 c.0.8729 d.0.9207 e.0.0793

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