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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?
Use the traditional method to test the given hypothesis. Assume that the population is the normally distributed and that the sample has been randomly selected.
A certain firm specializing in the manufacture and sale of free time clothing has 80 retail stores in Florida and 140 in California. With each state as a stratum, the firm wishes to estimate average sick-leave time per employee for the past year
A researcher uses hypothesis test to estimate H0 µ= 80. Which combination of factors is most probable to result in rejecting null hypothesis?
For a normal population with u. = 80 and a = 20 which of the following samples is least likely to be obtained?
What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence?
If you arbitrarily grab 2 socks out of drawer determine the probability that you grab a matching pair?
Determine r.m.s. error for regression prediction of height at 18 from height at 6.
Assuming the population is large, which sample size will give the smallest standard deviation to the statistic and select the numbers for the first five to be interviewed.
When we carry out a goodness of fit chi-square test, the expected frequencies are based on the alternative hypothesis
A sample of 100 observations has a mean of 2.99 and a standard deviation s equal to 0.5 Conduct the following test of hypotheses about the corresponding population mean at a level of significance of α = 0.2
What is the probability that a particular driver has two speeding violations.
The state highway department is studying traffic patterns on one of the busiest highways in the state. As part of the study, the department needs to estimate the average number of vehicles that pass an intersection each day. A random sample of 64 ..
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