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Define the random variable x to be the time you get home on Thursday.
a) Is x a discrete or continuous random variable? Explain.
b) Sketch a graph of the probability function f(x). Explain how you determined the shape of the graph.
A quality control engineer selects a part to be tested. The part is then declared acceptable, repairable, or scrapped. Then another part is tested. List all the possible outcomed of this experiment.
Concept of statistical signi cance
The average SAT score at a regional university is u=710, and standard deviation q=60. Assume that the university has a normal distribution convert a student score X=770 into a z-score.
Need to come up with a regression model to forecast monthly sales of cold beverages for the next year. What variables might be included in the model?
According to studies, 1% of all patients who undergo laser surgery to correct their vision have serious post laser vision problems. In a sample of 95,000 patients, what is the approximate probability that fewer than 960 will experience serious..
Determine the critical path and project completion time.
you have been hired by medicaid state run program in support of medical care for indigent to advise the director on how
fitting of simple linear regression equation.given the student population for a school district over the past few years
A manufacturer claims that the mean lifetime of its light bulbs is 55 months. The standard deviation of these lifetimes is 6 months. Twenty-two bulbs are selected at random, and their mean lifetime is found to be 56 months.
Do you think a sample of 25 is large enough to give them the margin of error they want? If not, how large a sample do you suggest they take?
At a food processing plant, a machine produces 10 lb bags of sugar. In this particular process, it is important that the sugar content does not go below 9.9 lbs. In fact, when the bags of sugar are less than 9.9 lbs, maintenance is performed on th..
Explain how the binomial distribution could be used in quality control to sample 50 parts in a lot of 500. binomial distrbution
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