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A Manager needs to decide between two machines to put into market following a Weibull distribution.
Machine X test unit cost $3000 with beta=3 and theta=500
Machine Y test unit cost $2000 with beta=3 and theta=400
If the machines has a life of 20 hours which machine would go to market?
Suppose we wish to test the null hypothesis that there are no differences among the proportion of men and women who developed a rash. Evaluate the P-value of the chi-square test of this hypothesis.
What is the probability of drawing one or more aces after discarding 5, 7, 8, and 9
Conduct an analysis of variance
The New York Times reported (L.J> Flynn, Tax Surfing, The New York Times, March 25, 2002, p. C10) that the mean time to download the home page for the internal Revenue Service (IRS) , was 0.8 second. Suppose that the download time was normally di..
You have two unbiased estimates, e 1 and e 2 , of a quantity with variances V 1 and V 2 respectively, and covariance Cov {e1,e 2 } = C. Form a new unbiased estimate:
Simulate the arrival of cars at the service station for 20 arrivals and compute the average time between stations and Simulate the arrival of the cars at the service station for 1 hour
Research question: Are mean crash damages same for these 3 vehicles? Crash1 Crash Damage ($).
Set up null hypothesis for associated F test.
Find a 90% confidence interval for the population mean weight of all such turtles.
What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence?
Determine margin of error for confidence interval in (a)?
If is the proportion of the next 100 shoppers that buy a packet of the crackers after tasting a free sample, then the probability that fewer than 30% buy a packet after tasting a free sample is approximately.
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