A Distribution of Measurements Is Relatively Mound-Shaped with Mean 70

Short Answer

A distribution of measurements is relatively mound-shaped with mean 70 and standard deviation 10.
a. What proportion of the measurements will fall between 60 and 80?
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b. What proportion of the measurements will fall between 50 and 90?
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c. What proportion of the measurements will fall between 50 and 80?
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d. If a measurement is chosen at random from this distribution, what is the probability that it will be greater than 80?
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