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An airline has 20 planes, is short on money, and doesn't want to spend any more than necessary to keep the planes safely flying. The cost to perform preventive maintenance (PM) on all 20 planes is $16,000. If a plane has a malfunction between PM inspections, it costs an average of $4000 to fix it. The malfunction history on the planes is as follows:
Months between PM Probability of malfunction
One .2
Two .3
Three .5
How often should PM occur to minimize the total expected costs?
Transform each equation to standard form. Then find the center, foci, major and minor axes, and ends of each latus rectum. Draw the curve
classes of first year in a school are full and it is necessary to open new groups. we consider that half of the
What is the annual percent yield per share?D0 = $3.82 and therefore D1 = $3.82 x 1.07 = 4.09.
Calculate effect size.
A consumer's group checked the gasoline mileage (to the nearest mile per gallon) on 25 different cars. The following gives a summary of the findings:
Verify that each of the following are equivalence relations on the plane R^2 (where R are real numbers) and describe the equivalence classes geometrically.
Thirty-eight percent of hospital admissions for diabetic patients are related to problems with the kidneys. In a sample of 10 diabetic hospital admissions, calculate the mean and standard deviation of diabetic patients with kidney problems.
Which of the participants would you judge to be capable? Explain
What is the probability that a randomly chosen employee is a female given that she is an hourly staff?
Determine the correct degree of freedom
The radiator in Natalie's car contains 6.3 L of antifreeze and water. This mixture is 30% antifreeze. How much of this mixture should she drain and replace with pure antifreeze so that there will be a mixture of 50% antifreeze?
he log was 210 feet ahead of you when you noticed it, which unfortunately wasn't soon enough.
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