Identify each of the following studies as either descriptive statistics or inferential statistics: A) Examine the heights of a sample of 50 NBA basketball players to see if the average height of all NBA basketball players is 75 inches. B) Post the
average midterm score for the statistics class. C) Estimate the percentage of the US population that will vote for George W. Bush in the 2004 presidential election. D) Select a random sample of 250 babies born in 2002 and estimate the birth weight of all babies born during the same year. E) Examine the weights of a sample of 20 candy bars to see if their average weight is 6 ounces.
Inferential; Descriptive; Inferential; Inferential; Descriptive
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Which one of the following types of costs is most likely to be included in determining the cost of inventory?
A) freight-in costs B) freight-out costs C) interest cost for amounts borrowed to finance the purchase of inventory D) marketing costs
A firm has a total sales of $100,000 . If its sales rise, its
a. Per unit variable costs will rise. b. Net income based on variable costing will go up more than its net income based on absorption costing. c. Fixed costs will also rise. d. Net income based on absorption costing will go up more than its net income based on variable costing.
In the notation used to identify the single-channel, constant service rate queuing model M/D/1, the letter D refers to ______.
a. Poisson distribution of arrival rates b. Poisson distribution of service rates c. single channel or server d. constant service rate
Which of the following statements about social class is FALSE?
A. The various classes tend to save money in different ways. B. Income by itself can be a pretty good measure of social class. C. The various classes tend to borrow money in different ways. D. The various classes tend to have different attitudes. E. The various classes tend to have different beliefs.