Historical data show that customers who download music from a popular Web service spend approximately ​$24 per​month, with a standard deviation of $3. Assume the spending follows the normal probability distribution. Find the probability that a customer will spend at least ​$21 per month. How much​ (or more) do the top 11​% of customers​ spend?   What is the probability that a customer will spend at least ​$21 per​ month? ​(Round to four decimal places as​ needed.)   How much​ (or more) do the top ​11% of customers​ spend? (Round to the nearest cent as needed)

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
Historical data show that customers who download music from a popular Web service spend approximately ​$24 per​month, with a standard deviation of $3. Assume the spending follows the normal probability distribution. Find the probability that a customer will spend at least ​$21 per month. How much​ (or more) do the top 11​% of customers​ spend?
 
What is the probability that a customer will spend at least ​$21 per​ month?
​(Round to four decimal places as​ needed.)
 
How much​ (or more) do the top ​11% of customers​ spend?
(Round to the nearest cent as needed)
 
The answer is not 0.1587 for the first part
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman