If x is a normal random variable with a mean of 100 and a standard deviation of 10, find the following probabilities: A) P(x? 128) B) P(x? 113) C) P(87 ?x? 98)


0.0026; 0.9032; 0.3239

Business

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Which form of marketing research involves talking with people in their homes or offices, on the street, or in shopping malls?

A) individual interviewing B) focus-group interviewing C) telephone interviewing D) mail questionnaires E) observational research

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The study of consumer behavior excludes factors that influence purchase decisions and product use

Indicate whether the statement is true or false a. True b. False

Business

The key advantage of a PBX is that it saves the cost of requiring the enterprise to implement individual lines for each user to the telephone company's central office

Indicate whether the statement is true or false

Business

Concept tests are part of which stage in the new-product process?

A. new-product strategy development B. idea generation C. screening and evaluation D. business analysis E. development

Business