# Refer to Exercise 8.S.I. Construct a scatterplot of the data. Does the appearance of the scatterplot indicate

## Question:

Exercise 8.S.I.

A volunteer working at an animal shelter conducted a study of the effect of catnip on cats at the shelter. She recorded the number of "negative interactions" each of 15 cats made in 15-minute periods before and after being given a teaspoon of catnip. The paired measurements were collected on the same day within 30 minutes of one another; the data are given in the accompanying table.29

(a) Construct a 95% confidence interval for the difference in mean number of negative interactions.

(b) Construct a 95% confidence interval the wrong way, using the independent-samples method. How does this interval differ from the one obtained in part (a)?

Fantastic news! We've located the answer you've been seeking!

## Step by Step Answer:

**Related Book For**

## Statistics For The Life Sciences

**ISBN:** 9780321989581

5th Edition

**Authors:** Myra Samuels, Jeffrey Witmer, Andrew Schaffner