a. Explanation Given info: The company’s desire is to know, the proportion of audience watch the super bowl to spend large amount for purchasing the advertising time. To reach the objective, a sample of 1,008 Americans adults were selected and among these individuals men and women were separately asked whether their wish is looking forward to watch football game or watching the commercials in the upcoming super bowl. The result was that among men 16% were planning to watch and looking forward to the commercials and among women 30% were planning to watch and looking forward to the commercials. Justification: Observational Study : An observational study measures the values of a variable without influencing the values of response variables and explanatory variables. Thus, in observational study researchers can observe the behaviors of the individuals without influencing the outcome of that study. Here, the researcher ask the individual American adults whether they are planning to watch or not and observe their proportions. The researchers do not influence the individuals to watch super bowl but merely observe. Here no treatment is applied to the population of interest. Hence, this is not an experiment. Thus, this is an observational study... b. To determine Check whether the design of the study is appropriate to answer advertiser’s question.

4th Edition

ISBN: 9780321826275

Author: Richard D. De Veaux

Publisher: PEARSON

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Chapter 11, Problem 18E

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Check whether the given sample is stratified sample or a blocked experiment.

To determine

Check whether the design of the study is appropriate to answer advertiser’s question.

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Chapter 11, Problem 17E

Chapter 11, Problem 19E

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Check whether the given sample is stratified sample or a blocked experiment.

Solution Summary: The author explains that an observational study measures the values of a variable without influencing the value of response variables and explanatory variables.

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Check whether the given sample is stratified sample or a blocked experiment.

Check whether the design of the study is appropriate to answer advertiser’s question.

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