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Question: A researcher finds a claim in the newspapers that the average room rate (ARR) of all Abu Dhabi hotels is $163 per night. The researcher takes a sample of 25 hotels in Abu Dhabi and obtains a sample average room rate of $166. Assume that the standard deviation for Abu Dhabi hotels room rates, σ =10.
a. Test: H0 μ = 163, H1 μ ≠ 163, α = 0.05
b. Interpret your results.
c. Construct a 95% confidence interval for the mean and provide a description of the meaning of the confidence interval.
use two sums from part A and the computational formal to compute sum of square (SS)for the scores.
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Use a calculator or appropriate computer software to verify that, for the preceding data, xbar = 5.1.
When only two treatments are involved, ANOVA and the Student t test (Chapter 11) result in the same conclusions. Also, . As an example, suppose that 14 randomly selected students were divided into two groups, one consisting of 6 students and the othe..
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Cars pass a certain street location according to a Poisson process with rate λ. A woman who want to cross the street at that location waits until she can see that no cars will come by in the next T time units.
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