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Imagine that the equation for predicting y from x is y = 1.12 - .47x.
How would you use this equation to predict a particular individual's score?
give two suggestions regarding how a statistician might generate probability estimates when empirical data is
Suppose that January sales for the fourth year turn out to be $295,000. What was your forecast error? If this is a large error, Karen might be puzzled about the difference between your forecast and actual sales value.
A further analysis of differences between every pair of groups was reported as all p 0.01.9 Interpret these reported ?ndings. What were the degrees of freedom for Factor, Error, and Total?
Each year, Business Week publishes information and rankings of master of business administration (MBA) programs. The data file MBA Analysis contains data on several variables for eight reputable MBA programs as presented in the October 2, 2000
Use a significance level .05 to conduct a 4 step procedure. Be sure to state your conclusion. Formulate null and alternative hypothesis, test statistic and p value.
Suppose you toss a die 100 times in a row. What is the probability that you see 4 spots between 10 and 20 times?
A student figures that he has an 83% chance of being let out of class late. If he leaves class late, there is an 86% chance that he will miss this train. What is the probability that he gets out of class late and misses the train?
One of the most common forms of colorblindness is a sex-linked hereditary condition caused by a defect on the X chromosome (one of the two chromosomes that determine gender).
Suppose a person within the last year claimed to have bought Google stock at closing at $362.50 per share. What is the probability that the stock closed at $362.50 or less on a randomly selected business day
Is there evidence that a stock split causes excess returns for the month following the split? Redo the problem, using the sign test. Compare the results of the sign test with those of the Wilcoxon test.
A sample of 3000 observations has a mean of 85 and a standard deviation of 10. The distribution is bell-shaped. Using the empirical rule, find what percentage of the observations fall in the intervals
the machine that fills bottles is fairly precise. the distribution of the number of ounces of water in the bottles is
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