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What distinguishes regression from ANOVA? What are the assumptions and limitations of each, and when should one be used in place of the other
If an urn is selected at random and a ball is drawn, find the probability it will be red.
Explain these results to a person who understands the t test for a single sample but knows nothing about the t test for independent means.
The mean of a set of 7 numbers is 13. What is the sum of the numbers? Find the mode of the following test scores: 89, 78, 91, 82, 75, 89, 84, 95, 89, 93
What is the probability that Sara will die in her 60 th year? Using this probability and the $50,000 death benefit, what is the expected loss to Big Rock Insurance?
Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
Findout the margin of error for this survey if we want a 99 percent confidence in our estimate of the percent of adults over 50 who take vitamin supplements.
The GMAT scores from a sample of 50 applicants to an MBA program indicate that none of the applicants scored below 450. A frequency distribution was formed by choosing class intervals 450 to 499, 500 to 549, and so on, with the last class having a..
A point estimate for the difference between the mean purchases of the users of the two credit cards is:
History suggests that the average number of hurricanes formed during a year is 6.0 hurricanes. Find the probability of at most three hurricanes being formed during a randomly selected year.
A sample of 49 pieces of cloth reveals a sample mean breaking strength of 69.1 pounds. State the null and alternative hypotheses.
Using any present or past job related data, perform an ANOVA in either Excel or MegaStat. Write your null and alternate hypothesis. Post your ANOVA table. Interpret the results.
In other words, explain why, all else being equal, as sample size increases the likelihood of finding a statistically significant relationship increases.
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