Percent of data
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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In the sum A + B = C, vector A has a magnitude of 11.0 m and is angled 33.5° counterclockwise from the +x direction, and vector C has a magnitude of 15.0 m and is angled 21.5° counterclockwise from the -x direction. What are the magnitude
Five people get on an elevator that stops at five floors. Assuming that each has an equal probability of going to any one floor, find the probability that they all get off at different floors.
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