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1. Roger Amster teaches an English course in which 40 students are enrolled. After yesterday's class, Roger questioned the 5 students who always sit in the back of the classroom. Three of the 5 said "yes" when asked if they would like A Tale of Two Cities as the next class reading assignment.

a. Identify the population and the sample in this situation.

b. Is this likely to be a representative sample? If not, why not?

2. In studying the performance of the company's stock investments over the past year, the research manager of a mutual fund company finds that only 43% of the stocks returned more than the rate that had been expected at the beginning of the year.

a. Could this information be viewed as representing the nominal scale of measurement? If so, explain your reasoning. If not, why not?

b. Could this information be viewed as representing the ratio scale of measurement? If so, explain your rea- soning. If not, why not?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
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