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At a local manufacturing plant, employees must complete new machine set ups within 30 minutes. New machine set-up times can be described by a normal model with a mean of 22 minutes and a standard deviation of four minutes.
The typical worker needs five minutes to adjust to their surroundings before beginning their duties. What percent of new machine set ups are completed in less than 25 minutes?
A.Approximately 68%
B.Approximately 77.3%
C.Approximately 22.7%
D.Approximately 25%
At a successful garage, there is always a backlog of cars waiting to be serviced. The service times of cars are iid exponential random variables with a mean service time of 30 minutes. Find the PMF of N(t), the number of cars serviced in the first..
Area If 100 feet of fence is to be used to enclose a rectangular yard, then the resulting area of the fenced yard is given.
430 randomly selected light bulbs were tested in a laboratory, 224 lasted more than 500 hours. Find a point estimate of the proportion of all light bulbs that last more than 500 hours.
A positive integer valued random variable N is a stopping time with respect to the discrete time stochastic process {X1, X2, · · · } if for every n, the event {N = n} is determined by the values of {X1, X2, · · · , Xn}.
Just as our parents did for us, my husband and I rely solely on Christian Science for all the health needs of our four sons and find it invaluable.
From previous years, the manager believes that the distribution of the number of customer arrivals has a Poisson distribution with an average of 3.5 loan.
The weight of a .5 cubic yard bag of landscape mulch in uniformly distributed over the interval from 38.5 to 41.5 pounds. Give a mathematical expression for the probability density function.
Let X be a random variable representing the remission time in weeks for all patients using the new drug. Assume that the distribution of x is normal. A previously used drug treatment has a mean remission time of 12.5 weeks. Does the data indicate ..
Simplify a product of radical expressions. Assume that all variables represent positive real numbers
in each of the following situations the sampling frame does not match the population resulting in undercoverage. give
Find the probability that the driver was intoxicated or the pedestrian was not intoxicated?
1.if the time it takes to finish a quiz follows a uniform distribution between 0 and 4 minutes what is the probability
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