Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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Please help me with this practice problem.

Use the Empirical Rule to answer each question.

During 1 week an overnight delivery company found that the weights of its parcels were normally distributed, with a mean of 20 ounces and a standard deviation of 5 ounces.

(a) What percent of the parcels weighed between 10 ounces and 25 ounces? (Round your answer to one decimal place.)

[Input box] %

(b) What percent of the parcels weighed more than 35 ounces? (Round your answer to two decimal places.)

[Input box] %
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Transcribed Image Text:Use the Empirical Rule to answer each question. During 1 week an overnight delivery company found that the weights of its parcels were normally distributed, with a mean of 20 ounces and a standard deviation of 5 ounces. (a) What percent of the parcels weighed between 10 ounces and 25 ounces? (Round your answer to one decimal place.) [Input box] % (b) What percent of the parcels weighed more than 35 ounces? (Round your answer to two decimal places.) [Input box] %
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