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Use the binomial distribution to determine the probability that a student will get at least 8 out of 10 questions on a ten question multiple choice test correct by just guessing if each question has four (4) choices. Assume that the student randomly guesses any of the four choices with a .25 chance of guessing the CORRECT choice.
Say, for example, the correlation is 0.75 between Height (measured in inches) and Weight (measured in pounds). If Height were changed to being measured in centimeters (where 1 inch = 2.54 centimeters) what effect would this have on the correlation..
From the given research, compare the major players better at batting than 20 years ago using five step hypothesis.
Plot fitted values against residuals. Does this plot point out any problems with homoscedasticity?
Compare the means of two populations using 96% confidence interval:
Suppose today's sample yielded a mean of $4.19 and a standard deviation of $0.10, create and interpret a 99% confidence interval for the population standard deviation. Assume the distribution of gas prices in the area follows a normal distribution..
Setup the alternative hypothesis that will test the claim that the percentage of women preferring white wine is 25% higher than men.
A market research company surveyed consumers to determine their ranked preferences of energy drinks among the brands Monster, Red Bull, and Rockstar.
An experiment involves rolling a fair six-sided die repeatedly. How many times must the die be rolled for a {6} to result at least once with probability greater than or equal to 0.6 ?
In testing equality of two means below, determine the test statistic? (Use the equal variances formula)
In a study designed to determine patientâ??s acceptance of a new pain reliever, 100 physicians each selected a sample of 25 patients to participate in the study.
The resort's historical climate data suggests that the probability of a good winter with lots of snow during any given year is 40%.
Calculate a 95% confidence interval for the population mean, based on the sample 10, 12, 13, 14, 15, 16, and 49.
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