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A fast food chain restaurant chain claims that lunch will be served within nine minutes of placing your order, or it is free. A sample of eight customers revealed the following waiting times in minutes:
10.1 9.3 9.2 10.2 9.3 9.6 9.4 8.8
At the .01 significance level, can we conclude that the waiting time for lunch exceeds nine minutes. Estimate the p- value.
At.01 significance level, can we conclude that there is more variation in selling prices of oceanfront homes?
Test this conjecture with formal hypothesis test, by using a 5% significance level. Find out the p-value for hypothesis test.
Conduct post hoc comparisons with the LSD method. Which groups differ significantly at α = 0.05?
Below are bowling scores for several UMUC statistics professors. Based on output from ANOVA, who is the better bowler (for those of you who don't bowl, a numerically higher score indicates a better score)?
At.05 level of significance can director conclude that there is difference in the number of circuit cards bought by month?
A baseball player gets a hit in 30 out of 100 times at bat. What is the probability that he gets a hit in his next at bat?
When we carry out a chi-square test of independence, the expected frequencies are based upon the Null hypothesis - true or false.
Find a 90% confidence interval for the population average µ of the percentage of hospitals providing at least some charity care.
The participants in a television quiz show are picked from a large pool of applicants with approximately equal numbers of men and women.
An analyst thinks that the economic conditions during the next year will either be Strong, Normal or Weak and she thinks that the Simpson Company's returns will have the following probability distribution.
Find the probability that a customer with 2 or more late payments will actually default on his payments and, in light of this probability, criticize the manager's credit plan.
When is it important to have matched pairs rather than two independent sets of data?
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