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1. Scores for a civil service exam are normally distributed, with a mean of 75 and sd of 6.5. To be eligible for civil service employment, you must score in the top 10%. What is the lowest score you can earn and still be eligible for employment?
A. The lowest score you can earn and still be eligible for employment is 75
B. The lowest score you can earn and still be eligible for employment is 83.32
C. The lowest score you can earn and still be eligible for employment is 84.5
2. The length of time employees have worked at a corporation is normally distributed, with a mean of 11.2 years & sd of 2.1 years. In a company cutback, the lowest 5% in seniority are laid off. What is the maximum length of time an employee could have worked and still be laid off?
A. 9 years and above
B. 7.75 years and below
C. 9 years and below
Suppose you have a square yard that is x feet on each side. Suppose you put a 2 1/2 foot sidewalk around the edge of this yard, reducing the area of the yard. What is the new area of the yard? What is the total area of the sidewalk?
Test hypothesis for variance.
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Sally needs a new car. She is trying to lesson her "carbon foot print", but at the same time she wants to spend her money wisely. She is deciding between the Lexus RX 450h (hybrid) and the Lexus RX 350. The RX 450h costs $43,700 with anticipat..
Oil spilled from a ruptured tanker spreads in a circle whose area increases at a constant rate of 5.5 mi2/hr. How rapidly is radius of the spill increasing when the area is 11 mi2?
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A weather balloon is located on a bearing of N 42 E from the western station and a bearing of N 15 E from the eastern station. How far away is the balloon from the eastern station? From the Western Station?
Find the Riemann sum for the function f(x) = x^2 on the interval [-4, 2] where the constituent subintervals are [-4,-3], [-3, 0], [0, 2], and the evaluation points are at the left-hand endpoint of each subinterval. Your answer should be an integer..
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