Normally distributed with a mean
Suppose that adults have IQ scores which are normally distributed with a mean of 105 and a standard deviation of 15. Find the percentage of adults that have an IQ exceeding 116. Round your answer to the nearest integer.
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The rock falls off the building, and its position after t seconds of free fall is 269-16t2 feet above ground. Building is 269 feet tall. Determine rock's velocity at t=3 seconds?
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Four laboratories are being employed to carry out chemical analysis. Samples of same material are sent to the laboratories for analysis as part of the study to determine whether or not they give, on average, the same results. Suppose the distribut
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Assume the correlation, r, between two variables x and y is -0.44. What would you predict about a y value if the x value is 2 standard deviations above its mean?
She then takes metro to work, that travels at 39 mph. If she spends 21 minutes (that is .35 hour) less on bike than on metro, find distance from her house to metro?
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