Opinion-Polling Organizations Sometimes Contact Their Respondents by Sampling Random Telephone

question 57

Multiple Choice

Opinion-polling organizations sometimes contact their respondents by sampling random telephone numbers.Assume that interviewers can now reach about 74% of Canadian households,while the percentage of those contacted who agree to cooperate with the survey is 32%.Each household,of course,is independent of the others.What is the probability of failing to contact a household or of contacting the household but not getting them to agree to the interview?

• A)0.177
• B)0.823
• C)0.497
• D)0.763
• E)0.452

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Definitions:

Boreal Forest

Extensive high-latitude forest of the Northern Hemisphere; conifers are the predominant vegetation.

Temperatures

A measure of the warmth or coldness of an object or substance with reference to some standard value.

Freshwater Lakes

Bodies of standing water, of various sizes, that contain low concentrations of salt, making them habitable for a variety of freshwater organisms.

Turn Over

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