Refer to Exercise 8.S.1. Compare the before and after populations using a t test at α = 0.05. Use a nondirectional alternative. 8.S.1 A volunteer working at an animal shelter conducted a study of theeffect of catnip on cats at the shelter. She recorded the number of“negative interactions" each of 15 cats made in 15-minute periods beforeand after being given a teaspoon of catnip. The paired measurementswere collected on the same day within 30 minutes of one another; the dataare given in the accompanying table.29a. Construct a 95% confidence interval for the difference in meannumber of negative interactions.b. Construct a 95% confidence interval the wrong way, using theindependent-samples method. How does this interval differ from theone obtained in part (a)?CatBefore (Y.)After (Y)DifferenceAmeliaBathsheba36-3Boris34-1Frank1-1JupiterLupine45-1Madonna1.3-2Michelangelo21Oregano35-2Phantom7-2Posh1.Sawyer1-1Scary35-2Slater2-2Tucker22Mean1.82.8-1SD1.662.371.20

a ) Sample Before After difference (d) (d-d̄)2 1 0 0 0 1 2 3 6 -3 4 3 3 4 -1 0 4 0 1…

Answered: ct of catnip on cats at the shelter.…

ct of catnip on cats at the shelter. She recor jative interactions" each of 15 cats made in after being given a teaspoon of catnip. The A collected on the same day within 30 minut

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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