Questions from Essentials of Statistics

Q: In the paper, “Sex Differences in Static Strength and Fatigability

In the paper, “Sex Differences in Static Strength and Fatigability in Three Different Muscle Groups” (Reasearch Quarterly for Exercise and Sport, Vol. 61(3), pp. 238–242), J. Misner et al. published r...

Q: Refer to Problem 6. Determine a 90% confidence interval for

Refer to Problem 6. Determine a 90% confidence interval for the difference between the mean right-leg strengths of males and females. Interpret your result. Data from Problem 6: In the paper, “Sex Di...

Q: In the article “The Eastern Cottonmouth (Agkistrodon piscivorus) at

In the article “The Eastern Cottonmouth (Agkistrodon piscivorus) at the Northern Edge of Its Range” (Journal of Herpetology, Vol. 29, No. 3, pp. 391–398), C. Blem and L. Blem examined the reproductive...

Q: We have presented some quantitative data sets and specified a grouping method

We have presented some quantitative data sets and specified a grouping method for practicing the concepts. For each data set, a. determine a frequency distribution. b. obtain a relative-frequency dist...

Q: Find a 98% confidence interval for the difference between the mean

Find a 98% confidence interval for the difference between the mean litter sizes of cottonmouths in Florida and Virginia. Interpret your result.

Q: An international poll of physicians was conducted on the New England Journal

An international poll of physicians was conducted on the New England Journal of Medicine website asking “Do you believe that the overall medicinal benefits of marijuana outweigh the risks and potentia...

Q: Refer to Problem 9. a. Determine a sample size

Refer to Problem 9. a. Determine a sample size that will ensure a margin of error of at most 0.02 for a 95% confidence interval without making a guess for the observed value of p^. b. Find a 95% confi...

Q: In an issue of Parade Magazine, the editors reported on a

In an issue of Parade Magazine, the editors reported on a national survey on law and order. One question asked of the 2512 U.S. adults who took part was whether they believed that juries “almost alway...

Q: In the article “Height and Weight at Various Ages and Risk

In the article “Height and Weight at Various Ages and Risk of Breast Cancer” (Annals of Epidemiology, Vol. 2, pp. 597–609), L. Brinton and C. Swanson discussed the relationship between height and brea...

Q: The Pew Internet & American Life Project conducted a survey of smartphone

The Pew Internet & American Life Project conducted a survey of smartphone ownership. One aspect of the study involved the gender of smartphone owners. Of 1029 sampled men, 607 owned a smartphone; and...