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What statistic would be applied if the independant variable is nominal and one dependant variable is nominal and one dependant variable is scale? Is this a T-test?
Sample from a normal population having a standard deviation of 0.04, what is the probability that the mean of a random sample of size 25 will be "off" by at most 0.02.
Is there evidence to suggest a difference in the mean waiting times at the four body shops? Use the .05 significance level.
A sample of 25 concession stand purchases at the May 12 matinee of Spider-Man 3 showed a mean purchase of $ 7.29 with a standard deviation of $ 3.02. For the May 18 evening showing of the same movie.
At a college, 70 percent of the students are women and 35 percent of students receive grade of C. About 20 percent of students are neither female nor C students. Use this contingency table.
For the passengers in the SRS, what is the approximate probability that the mean length of time for them to get through security will be less than 18 minutes?
Determine the p-value for this test. Is there sufficient evidence to justify the rejection of H0 at the "alpha" level of 0.01? Please explain your answer.
There is not enough information to answer the question, the formula requires knowing the population standard deviation for Mark and Debbie, and we were not given this information.
At a certain university, the average cost of books per student was $330 per student last semsester. In a sample of 50 students this semester, their average cost was $355 with a standard deviation of $85.
For the following ANOVA table are the results from treating 4 cultures with 6 observations for each culture. The enzymes are contained in test tubes with differing levels of enzymes applied.
Find the prediction equation for the price of a laptop using rating and features. What is the value of the residual standard deviation?
However, Peter's assistant Janice believes that the Liberal Party will receive approximately 75% of the vote in that riding. If survey costs are $10 per person, how much money can be saved by using Janice's estimate of the percentage rather than P..
Define the rejection region. State the statistical decision.
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