A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN: 9780134753119
Author: Sheldon Ross
Publisher: PEARSON
Bartleby Related Questions Icon

Related questions

Question

Kindly help to explain all steps. Part C is very important to me. I want to understand the steps. Thank you very much!

 

Recall IQ s are normally distributed such that the mean is 100 and the standard deviation is 15.  If a simple random sample of n = 15 is chosen answer the following questions using the standard normal table.  Round your calculated Z values to 2 decimal places and provide the the probabilities as a 5 place decimal.

 

a) What is the probability that the average IQ would be less than 90? 

b) What is the probability that the avearge IQ would be more than 115?

c) What is the probability that the average IQ would be between 90 and 115? Answer to 5 decimal places.

 

Expert Solution
Check Mark
Knowledge Booster
Background pattern image
Similar questions
Recommended textbooks for you
Text book image
A First Course in Probability (10th Edition)
Probability
ISBN:9780134753119
Author:Sheldon Ross
Publisher:PEARSON
Text book image
A First Course in Probability
Probability
ISBN:9780321794772
Author:Sheldon Ross
Publisher:PEARSON