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In order to determine the average price of hotel rooms in Atlanta, a sample of 64hotels was selected. It was determined that the average price of the rooms in the sample was $108.50 with a standard deviation of $16.
a) Formulate the hypotheses to determine whether or not the average room price is significantly different from $112.
b) Compute the test statistic.
c) At 95% confidence using the p-value approach, test the hypotheses. Let α = 0.1.
Determine the dependent variable(s)? Determine the value of the statistic? Write down the name of one variable not mentioned in this study that one might wish to control for.
In a binomial distribution n = 8 and π = 0.2. Determine the probabilities of the following events.
Perform the trend analysis of Pf with incrementally increasing number of the simulation cycles, and calculate the statistical uncertainty in the estimate expressed as the coefficient of variation.
Advertisers need to know which age groups are likely to see their ads. Purchasers of 120 copies of Cosmopolitan are shown by age group Perform the chi-square test for a uniform distribution at α = .01
Four wheel bearings have been replaced on a company car. The mechanic has selected 4 bearings from a large supply bin. The mechanic is unaware that 10 percent of the bearings fail within the first 100 miles.
Construct appropriate control charts for before and after introduction of the new pathway. Discuss process stability and the results.
A game involving a pair of dice pays out $4 with probability 16/36, costs you $2 with probability 14/36, and costs you $6 with probability 6/36.
At the 5 percent level of significance, does this sample prove a violation of the guideline that the average patient should pay no more than $250 out-of-pocket? State your hypotheses and decision rule.
A certain random experiment can result in one of four different possible outcomes, which we'll call A, B, C and D.
Compute mean x and standard deviation s of data above. Calculate Ho by using traditional/classical method.
Determine the z values for 29 and 34 hours. What percent of the garages take between 32 hours and 34 hours to erect?
How many boxes must the processor sample to be 95 percent confident that the sample mean does not differ from the population mean by more than 0.2 pounds?
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