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Question1: Suppose that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of $2,275 per hour and a standard deviation of $215.
Calculate the operating cost for the lowest 6% of the airplanes? (Round z value to 2 decimal places. Omit the "$" sign in your response.)
Question2: America West Airlines reports the flight time from Los Angeles International Airport to Las Vegas is 1 hour and 2 minutes, or 62 minutes. Suppose the actual flying time is uniformly distributed between 62 and 77 minutes.
[A] The variance of the flight times is ... (Give your answer to four decimal places.)
[B] The probability the flight time is less than 71 minutes is ... (Give your answer to four decimal places.)
[D] The probability the flight takes more than 68 minutes is ... (Give your answer to 4 decimal places.)
[E] The mean flight time is ... (Give your answer to 1 decimal place.)
Find the equation of ellipse from the given data - Find the equation of the indicated curve, subject to the given conditions
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Find how many ways are there of winning the World Series in exactly six games if the winning team wins the first game?
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A significant difference in the average amount
One month ago the ratio of nurses to doctors on a hospital staff was 3:5. Since that time two additional nurses joined the staff, no nurses left & the number of doctors remained the same. Find the ratio of nurses to doctors.
To determine the dimensions of a rectangular container and evaluate the derivative of the given equation.
find that the sample mean and sample standard deviation
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Determine the following values
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