The manager in charge of concessions at an NFL football stadium is interested in estimating the mean dollars that are spent per person attending the games
A pilot sample of n = 50 people has revealed a sample mean and standard deviation of $12.35 and $2.35 respectively. He wishes to estimate the population mean within ± $0.20 of the true mean and wishes to have a confidence level of 95 percent. Given this, he needs to sample an additional 481 people.
Indicate whether the statement is true or false
TRUE
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A work center had actual input of 280 hours and actual output of 270 hours. What is the change in backlog?
A) 10 B) -10 C) 0 D) 1.037 E) Unable to determine with the given information
A linear programming problem contains a restriction that reads "the quantity of X must be at least three times as large as the quantity of Y." Which of the following inequalities is the proper formulation of this constraint?
A) 3X ? Y B) X ? 3Y C) X + Y ? 3 D) X - 3Y ? 0 E) 3X ? Y