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High temp for January 1st is normally distributed with a mean of 40 degrees and a standard deviation of 5 degrees.
Determine the probability that the Jan 1st high temp will be exactly 40 degrees. Determine the probability that the Jan 1st temp will be above 48 degrees.
If Jan 2nd has the same high temp probability distribution, what is the probability that the high will be over 48 degrees 2 days in a row?
Find out a 95 percent confidence interval for population mean.
Determine the centerline and the upper and lower control limits for a 3-sigma mean control chart in which each sample consists of 4 cylinders
When the underlying average of a time series is very stable and there is no trend, cyclical, or seasonal influences,
When we move from the basic normal distribution to the sampling distribution of the mean we substitute the standard error of the mean for the standard deviation when we make the conversion to the standardized normal distribution.
Cards are drawn one by one from a standard deck of 52 cards. Let X be the number of draws up to and including when the first diamond is drawn. If the cards are replaced in the deck, determine E(X). If the cards are not replaced in the deck, determ..
At the Statsville County Fair, the probability of winning a prize in the ring-toss game is 0.1. Show the probability distribution for the number of prizes won in 8 games.
Determine whether the sampling method is independent or dependent for the following example. A researcher wants to know whether the newly issued "state" quarters have a mean weight that is different from "traditional" quarters.
Finnish Furniture manufactures tables in facilities located in three cities- Reno, Denver, and Pittsburgh. The tables are then shipped to three retail stores located in Phoenix, Cleveland, and Chicago.
Test hypothesis that Site B is more successful in initiating acquaintances than Site A. Use alpha = .05.
Create the corresponding decision tree and make recommendations.
What should the cut-off score be for the interviews? (Round to nearest whole number).
Define the rejection region. State the statistical decision.
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