Introduction To Statistics And Data Analysis

6th Edition

ISBN: 9781337793612

Author: PECK, Roxy.

Publisher: Cengage Learning,

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

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Textbook Question

Chapter 2.1, Problem 7E

The article “Popping Cork Sound Makes Wine Taste Better” (decanter.com/wine-news/popping-cork-sound-makes-wine-taste-better-experiment-377364, retrieved February 11, 2018) describes a study in which 140 people were assigned to one of two groups. Those in one group heard the noise made by a bottle of wine being uncorked before tasting a glass of wine. Those in the other group heard the noise made by a person releasing a screw cap before tasting a glass of wine. Both groups tasted the same wine. It was reported that the average rating was higher for the group that heard the cork popping than the average rating for the group that heard the screw cap being released.

a. Is the study described an observational study or an experiment?
b. Can a case be made for the researcher’s conclusion that hearing a cork pop rather than a screw cap being released was the cau.se for the higher rating? Explain.

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Chapter 2.1, Problem 6E

Chapter 2.1, Problem 8E

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Chapter 2 Solutions

Introduction To Statistics And Data Analysis

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Solution Summary: The author explains the difference between an observational and an experimental study.

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