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Fast food restaurants devote a lot of effort studying the amount of time cars spend in their drive-throughs. Obviously, the faster cars get through the drive-through, the more opportunity for making money. A study of fast-food drive-through times found that Wendy's had the best time, with mean time spent in their drive-through of 138.5 seconds. Assuming drive-through times are normally distributed with a standard deviation of 29 seconds:
Suppose in an attempt to develop marketing materials Tyco marketers are interested in determining whether there is a significant difference in the cost of replacing pipeline seals in different countries.
the random variable x represents the number of cars per household in a town of 1000 households. find the probability of
The cost for the conference room, instructor compensation, lab assistants, and promotion is $9,600. Micromedia rents computers for its seminars at a cost of $60 per computer per day. Question: find the breakeven point for this problem using Excel.
Fred is answering a multiple-choice problem on an exam, and has to choose one of n options (exactly one of which is correct). Let K be the event that he knows.
How many students must be randomly selected to estimate the mean weekly earnings of students at one college?
The reporter goes on to say that the margin of error for this poll was 3%.- Explain why the poll is actually inconclusive.- What confidence level did the pollsters use?
an accounting firm has been hired by a large computer company to test whether the proportion of accounts receivables
Establish an approximate design to MTBF required for a system that will result in an approximate minimum total cost over a five year period if the system is to be operated 7500 hours per year
Cramming. One Thursday, researchers gave students enrolled in a section of basic Spanish a set of 50 new vocabulary words to memorize.
FBI Report Do greater universities tend to have more property crime, would you speek that the correlation is low, moderate or high
1. If X = 2 and Y = 3, the constraint 2 X + 8 Y
What is the critical F value for a sample of 21 observations in the numerator and 15 in the denominator? Use a two-tailed test and the 0.02 significance level. (Round your answer to 2 decimal places.)
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