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

question 178

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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Definitions:

Sale Price

The final price at which an item is sold after any discounts or deductions have been applied.

Invoice

A document issued by a seller to a buyer that lists products or services provided along with the total amount due for payment.

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Conditions and stipulations under which agreements and contracts are made, outlining the obligations of involved parties.

Mark-up

Additional pricing on goods’ cost aimed to cover running expenses and secure profit.