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A machine is set to pump cleanser into a process at the rate of 9 gallons per minute. Upon inspection, it is learned that the machine actually pumps cleanser at a rate described by the uniform distribution over the interval 8.5 to 11.5 gallons per minute. Find the probability that between 9.0 gallons and 10.0 gallons are pumped during a randomly selected minute.
chi-square test for goodness of fit.there are four entrances to the government center building in downtown
The U.S.Census Bureau announced that the median sales price of new homes sold i April 2009 was $221,660, and the mean sales price waas $274,300. Assume that the standard deviation of the prices is $90,000.
What does this theorem allow you to do that traditional statistics do not? What are some prerequisites for using Bayesian statistics?
statistics is a method of decision making in the face of uncertainty and the basis of numerical data and calculated
Carbon monoxide (CO) emissions for a certain kind of car vary mean 2.4 g/mi and standard deviation 0.7g/mi. A company has 60 of these cars in its fleet. Let y represent the mean CO level for the companies fleet. Estimate the probability that y is ..
Find each value requested for the distribution of scores in following table. For the following scores the lowest value is x=13 place the scores in a frequency distribution table using.
identify the circumstances in which the median rather than the mean is the preferred measure of central
Reis, Inc., a New York real estate research firm, tracks the cost of apartment rentals in the United States. In mid-2002, the nationwide mean apartment rental rate was $895 per month
Suppose that you wish to test the effect of lowering the soil ph on the number of lady ferns in an area. The researchers hypothesize that lowering the ph-level of the soil will lead to more ferns.
Develop one research question and formulate a hypothesis which may be tested with linear, bivariate regression analysis.
When would you use a two population test with a small sample size at your place of employment, in your education, or in politics?
With a mean of 300 and a standard deviation of 80, how high a score do you need to be in the top 30%?
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