Questions from Essentials of Statistics

Q: What constitutes each pair in a paired sample?

What constitutes each pair in a paired sample?

Q: We have drawn a smooth curve that represents a distribution. In

We have drawn a smooth curve that represents a distribution. In each case, do the following: a. Identify the shape of the distribution with regard to modality. b. Identify the shape of the distributio...

Q: State the two conditions required for performing a paired t-procedure

State the two conditions required for performing a paired t-procedure. How important are those conditions?

Q: Why do you need to know the sampling distribution of the difference

Why do you need to know the sampling distribution of the difference between two sample means in order to perform a hypothesis test to compare two population means?

Q: Provide an example (different from the ones considered in this section

Provide an example (different from the ones considered in this section) of a procedure based on a paired sample being more appropriate than one based on independent samples.

Q: The A. C. Nielsen Company collects data on the TV

The A. C. Nielsen Company collects data on the TV viewing habits of Americans and publishes the information in Nielsen Report on Television. Suppose that you want to use a paired sample to decide whet...

Q: The article “Accuracy of Self-Reported Height and Weight in

The article “Accuracy of Self-Reported Height and Weight in a Community-Based Sample of Older African Americans and Whites” (Journal of Gerontology Series A: Biological Sciences and Medical Sciences,...

Q: In the paper “An Analysis of Factors That Contribute to the

In the paper “An Analysis of Factors That Contribute to the Efficacy of Hypnotic Analgesia” (Journal of Abnormal Psychology, Vol. 96, No. 1, pp. 46–51), D. Price and J. Barber examined the effects of...

Q: In the paper “Housing Values Near New Sporting Stadiums” (

In the paper “Housing Values Near New Sporting Stadiums” (Land Economics, Vol. 81, Issue 3, pp. 379–395), C. Tu examined the effects of construction of new sports stadiums on home values. Suppose that...

Q: There is convincing evidence that breastmilk containing antioxidants is important in the

There is convincing evidence that breastmilk containing antioxidants is important in the prevention of diseases in infants. Researchers A. Xavier et al. studied the effects of storing breastmilk on an...