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Consider the 3×2 contingency table below:
Factor B
Factor A
B1
B2
A1
16
14
A2
15
25
A3
9
21
At significance levels of .05 and .01 test H0: the factors A and B are independent.
Use a 95% confidence interval for multiple comparisons. Show your calculation by hand between Monday and Tuesday. Match your answer with Minitab output. Attach Minitab output.
By using the 0.10 level of significance, is there evidence that the population mean is above the $300?
A sample of 160 workers in the downtown area classified each worker by race. A bar graph of the results is given below, but the bar for black workers in the graph below has been omitted.
Professor Cox needs a volunteer amongst 30 students in his statistical applications course. The average age of his students is 25 years, with the standard deviation of 3 years.
What is the appropriate set of hypotheses to test such that a possible outcome of the test would indicate;
1st a confidence interval is constructed without utilizing the finite population correction factor.
There are two telephone lines A and B. Let E1 be the event that line A is being used and E2 be the event that line B is being used
Then explain your answer to someone who has never had course in statistics (but who is familiar with mean, standard deviation, and Z scores.)
In a survey conducted to see how long Americans keep their cars, 2000 automobile owners were asked how long they plan to keep their present cars. The results of the survey follow. Find out the probability distribution associated with these data.
An advantage of the permutation test over the t test for a difference in means, can Permutation tests be used for tests when we believe the two populations differ under the null hypothesis.
Developing project network using AOA that determines completion times.
What is the probability that a roulette ball will come to rest on an even number other than 0 and 00?
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