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A manufacturing company ships its product in two different sizes of truck trailers. Each shipment is made in a trailer with dimensions 8 feet×10 feet×30 feet or 8 feet×10 feet×40 feet. If 30% of its shipments are made by using 30-foot trailers and 70% by using 40-foot trailers, find the mean volume shipped per trailer load. (Assume that the trailers are always full.)
Calculate confidence intervals around the P and Q percentages using the following sample data: a. P = 75% , Q = 25% n= 678 @ 95% level of confidence b. P = 75%, Q = 25% n= 35 @ 95% level of confidence
a. Construct the four-quarter centered moving average for these data and determine the percentages of the moving average for the quarters. b. Determine the seasonal indexes for the quarters.
If it is rainy or cloudy one day, then there is one chance in two that it will be the same the next day, and if it changes then it is equally likely to be either of the other two possibilities. In the long run, what proportion of days are sunny? W..
Suppose that the average monthly pay for U. S. production worker is 2000$.Assume that available date indicate that production worker wages normally distributed with a standard deviation of 400$ .Suppose that a simple random sample of sides n=6..
We assume that we have selected two independent random samples from populations having proportions p 1 and p 2 and that p-hat 1 = 800/1000 and p-hat 2 = 950/1000
Construct a 90% confidence interval on the difference in fraction nonconforming between the two processes."
you are an engineer in charge of aircraft safety. you want to ensure that the probability of failure between
Statements about p-value testing is true? A. P-value testing applies only to one-tail tests. B. The p-value is the lowest significance level at which you should reject H0 - How large is the nonrejection region under the curve of the t distribution?
At the .01 significance level, can we conclude that there is more variation?
the quality control department wants to estimate the true percentage of rework for the electrical components to within
determine the appropriate division of the stakes in a series between two players if the first player is lacking three
hypothesis test for the difference between two means.grand strand family medical center is specifically set up to treat
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