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Identify two different properties of the distribution of values of that ratio.
based on data from "The Effect of Zinc Supplementation on Pregnancy Outcome," by Goldenberg, et al.
Use a 0.05 significance level to test the claim that braking distances of four-cylinder cars.
Testing Effects of Alcohol Researchers conducted an experiment to test the effects of alcohol.
Magnet Treatment of Pain Researchers conducted a study to determine whether magnets are effective in treating back pain.
BMI for Miss America Listed below are body mass indexes (BMI) for Miss America winners from two different time periods.
What do these results tell us about how the general population feels about the word ginormous?
The cans are arranged as 50 pairs, then the sugar content of each can is measured. Are the two samples (Coke and Pepsi) independent or dependent?
Using a 0.05 significance level, test the claim that there is no difference between the yields from the two types of seed.
Use a 0.01 significance level to test the claim that the acceptance rate is the same with or without blinding. How might the results be explained?
K. Rowling's Harry Potter and the Sorcerer's Stone and Leo Tolstoy's War and Peace. (Higher scores indicate writing that is easier to read.)
Based on data from "Essential Hypertension: Effect of an Oral Inhibitor of Angiotensin-Converting Enzyme," by MacGregor, et al.,
Use a 0.05 significance level to test the claim that the proportion of men who smoke is greater than the proportion of women who smoke.
Find the mean, median, mode, range, and standard deviation of the word counts for males. Express results with the appropriate units.
Is there sufficient evidence to support the claim that there is a difference between self-reported heights and measured heights of males aged 12-16?
The new ratings were implemented in response to complaints that the old ratings were too high.
Use a 0.05 significance level to test that theory. Does height appear to be an important factor in winning the presidency?
What does the value of the F test statistic reveal about the sample data?
What does the result suggest about the FICO credit rating score of a borrower and the interest rate that is paid?
Construct a 90% confidence interval estimate of the difference between the mean age of unsuccessful applicants.
Does the confidence interval include zero? What does the confidence interval suggest about the equality of the two population means?
Construct a 99% confidence interval of the difference between the mean white blood cell count of females and males.
Construct a 98% confidence interval of the difference between the mean longevity for popes and the mean longevity for British monarchs.
The given results are based on data from "Effects of Alcohol Intoxication on Risk Taking, Strategy, and Error Rate in Visuomotor Performance," by Streufert, el.
Construct a 95% confidence interval estimate of the difference between the mean Westley Croup Score of children treated with low humidity.