Algebra and Trigonometry (6th Edition)
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN: 9780134463216
Author: Robert F. Blitzer
Publisher: PEARSON
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Question

A population of values has a normal distribution with �=126.4 and �=88.2.

  1. Find the probability that a single randomly selected value is between 120.6 and 154.3. Round your answer to four decimal places.
    �(120.6<�<154.3)=   

  2. Find the probability that a randomly selected sample of size �=84 has a mean between 120.6 and 154.3. Round your answer to four decimal places. 

 

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