it is known that the "Stat is awesome" webpage takes on average 7 seconds to load with a population standard deviation of 2 seconds. a. what is the probability that the loading time will be less than 3 seconds? b. what is the probability that the loading time will be between 6 and 9 seconds?   2. a common sense test is specified so that scores are normally distributed with a mean of 100 and a standard deviation of 10 over the entire population.  A firm wishes to use the outcomes if this test to recruit potential employees.  if the firm will only recruit individuals in the top 2.5%, what scores will the firm use to decide whether an individual is recruited?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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it is known that the "Stat is awesome" webpage takes on average 7 seconds to load with a population standard deviation of 2 seconds.

a. what is the probability that the loading time will be less than 3 seconds?

b. what is the probability that the loading time will be between 6 and 9 seconds?

 

2. a common sense test is specified so that scores are normally distributed with a mean of 100 and a standard deviation of 10 over the entire population.  A firm wishes to use the outcomes if this test to recruit potential employees.  if the firm will only recruit individuals in the top 2.5%, what scores will the firm use to decide whether an individual is recruited?

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