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The amount of flour used per day by a bakery is a random variable Y that has an exponential distribution with mean equal to 4 tons. The cost of the flour is proportional to U=3Y+1
a) Find the probability density function for U. (using method of distribution)b) Use the answer in a) to find E(U)
In each of the following cases. find the mean , variance and standard of the sampling distribution of sample proportion p.
Compute the mean, variance and standard deviation for the grouped data. Based on the previous answer, how much could the realtor expect to make if he sells 3 houses?
Scientific poll based on 400 hospital patients has just been performed. Determine the probability that at least 70 patients will not be satisfied with after-surgery care?
Specification limits for a particular characteristic of a product indicate the values at which the product will operate properly. Assume we have a product with an upper specification limit of 7.25 and a lower specification limit of 4.0. As long as..
Suppose you wish to build a spa on a wood deck. The deck is to be built 4 ft above level ground. It is to be 50 ft by 30 ft and is to contain a spa that is circular with a 14-ft diameter. The spa is 4 ft deep.
Is it reasonable to compute that the mean of the population is actually $15,000.
According to an IRS study, it takes an average of 330 minutes for taxpayers to prepare, copy, and electronically file a 1040 tax form. A consumer watchdog agency selects a random sample of 40 taxpayers and finds the standard deviation of the time ..
Assess the model fit for the multiple linear regression model using appropriate statistics and graphics.
A radio station in Myrtle Beach announced that at least 90% of the hotels and motels would be full for the Memorial Day weekend. The station advised listeners to make reservations in advance if they planned to be in the resort over the weekend.
Determine the critical value, z0, to test the claim about the population proportion p
Is there a relationship between the opinion and the location of the resident at a level of significance of 0.05?
Testing for population mean - warp-breaking specification of the manufacturer at the .05 level of significance?
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