Set of test grades with a mean
Consider a set of test grades with a mean of 80 and a standard deviation of 3. Use Chebyshev's Theorem to find the percent of data that would fall between 74 and 86.
A. at least 88.9%
B. 100%
C. at least 75%
D. at least 93.8%
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A cylindrical shell of radius 9 cm and length 297 cm has its charge density uniformly distributed on its surface. The electric field intensity at a point 20.1 cm radially outward from its axis (measured from the midpoint of the shell) is 47700 N/C
Suppose there are only three candidates and she follows the following strategy. She rejects the first candidate and then selects the next candidate that is better than those already interviewed?
Calculate the amount of isopentyl acetate that should be present in the reaction mixture at equilibrium based on 300 mmol of acetic acid and 150 mmol of isopentyl alcohol as starting quantities.
A snowball rolls off a barn roof that slopes downward at an angle of 40.0 degrees. The edge of the roof is 14.0 meters above the ground, and the snowball has a speed of 7.00 m/s as it rolls off the roof. Ignoring air resistance, how far from the e
At 80C the vapor pressures of pure liquids X, Y, and Z are 385, 190, and 66 mmHg respectively. what pressure must be exerted on the surface of a solution containing one mole of X, three moles of Y, and two moles of Z for boiling to begin at 80C.
Mary took a test and her score was the 85th percentile. Which of the following is a TRUE statement about Mary's score? A. 85% of the other scores were above Mary's score.
Define the terms in this expression; also, sketch, label and describe the potential energy curve which describes this condition.
A Carnot engine operates between 100 C and 29 C. How much ice can the engine melt from its exhaust after it has done 5.0 x 104 J of work.
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