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Consider a job shop that consists of M machines and one serviceman. Suppose that the amount of time each machine runs before breaking down is exponentially distributed with mean 1/λ, and suppose that the amount of time that it takes for the serviceman to ?x a machine is exponentially distributed with mean 1/μ. We shall attempt to answer these questions: (a) What is the average number of machines not in use? (b) What proportion of time is each machine in use?
Develop a 95% confidence interval for the proportion of the population of adults who feel customer service is better today than it was 2 years ago.
Standard Normal Distribution Table
he probability that a pumpkin seed will germinate is 70%. A gardener plants the pumpkins in batches of 12. What is the mean of the distribution? What is the variance of the distribution?
The probability that a parolee will commit a crime while on parole is 0.68. A parole officer is in charge of 8 parolees. What is the probability that at least 7 of them will commit a crime while on parole?
Critically discuss the reasons for studying statistics? Choose five random numbers between 70-100. Calculate the mean, and midrange of these numbers.
What is the probability of getting- Four or more on a single toss of a fair die and Ace or king on a single pick from a well-shu?ed standard deck of cards?
the average age of doctors in a certain hospital is 45 years old . suppose the distribution of ages is normal and has a
1. consider a continuous random variable x with varx 4. a sample of 50 measurements of x is taken and xbar 68a.
If the component lifetimes are independent uniform (0,1) random variables, determine the probability that the system life will be less than ½ .
Suppose all cities are directly connected except B and C are not directly connected. How many different flight plans are available to the salesperson?
a organic food company wants to determine the best process for blanching dark green vegetable material so it can be
The researcher found that Abraham Lincoln's educational score did not correlate highly with the expected variable. What is wrong?
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