After a number of complaints about its directory assistance, a telephone company examined samples of calls to determine the frequency of wrong numbers given to callers. Each sample consisted of 100 calls.

SAMPLE 1 2 3 4 5 6 7 8
Number of errors 5 3 5 7 4 6 8 4

SAMPLE 9 10 11 12 13 14 15 16
Number of errors 5 9 3 4 5 6 6 7

a.) Set the control limits to include 95% of random variation in complaint rate.
b.) Plot the values of the sample statistic on a chart. Comment on the results.
c.) Discuss THREE major management decisions related to the use of the control charts.

You are at a holiday dinner with your family. your relative makes the argument that the u.s. economy is resurgent and has recovered from the great recession of 2007 – 2009. economic growth, as measured by gdp, has been increasing from one quarter to the next. you beg to differ. how would you structure your argument with your relative? hint: you should think about two things, the accuracy of gdp measures, and whether gdp should be considered a comprehensive measure of a countries well-being.

Shrieves casting company is considering adding a new line to its product mix, and the capital budgeting analysis is being conducted by sidney johnson, a recently graduated mba. the production line would be set up in unused space in the main plant. the machinery’s invoice price would be approximately $200,000, another $10,000 in shipping charges would be required, and it would cost an additional $30,000 to install the equipment. the machinery has an economic life of 4 years, and shrieves has obtained a special tax ruling that places the equipment in the macrs 3-year class. the machinery is expected to have a salvage value of $25,000 after 4 years of use. the new line would generate incremental sales of 1,250 units per year for 4 years at an incremental cost of $100 per unit in the first year, excluding depreciation. each unit can be sold for $200 in the first year. the sales price and cost are both expected to increase by 3% per year due to inflation. further, to handle the new line, the firm’s net working capital would have to increase by an amount equal to 12% of sales revenues. the firm’s tax rate is 40%, and its overall weighted average cost of capital, which is the risk-adjusted cost of capital for an average project (r), is 10%. define “incremental cash flow.” (1) should you subtract interest expense or dividends when calculating project cash flow?

Which of the following is the best example of substitution? a. movie producers begin making more comedies because they cost less to make than action films. b. people walk out before the end of a movie because the acting and the plot are terrible. c. people at the movie theater switch from popcorn to candy because popcorn has gotten too expensive. d. more people begin going to matinee movies instead of night movies to save money on the tickets.