2. An album is considered to be "certified platinum" if they sell more than 500,000 copies. Let X be the 400 and Sx x3 total number of copies of an album sold, in thousands. Let f(x) = c- = [500, 0) (a) For what value of c is f(x) a valid density? (b) What is the average number of copies sold by a platinum album? (c) What is the probability that a platinum album sells exactly 650,000 copies? (d) What is the probability that a platinum album sells between 450 and 750 thousand copies?

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
Topic Video
Question

statistics - need help understanding this question

2. An album is considered to be "certified platinum" if they sell more than 500,000 copies. Let X be the
total number of copies of an album sold, in thousands. Let f(x) = c-
400
and Sx = [500, ∞)
x3
(a) For what value of c is f(x) a valid density?
(b) What is the average number of copies sold by a platinum album?
(c) What is the probability that a platinum album sells exactly 650,000 copies?
(d) What is the probability that a platinum album sells between 450 and 750 thousand copies?
Transcribed Image Text:2. An album is considered to be "certified platinum" if they sell more than 500,000 copies. Let X be the total number of copies of an album sold, in thousands. Let f(x) = c- 400 and Sx = [500, ∞) x3 (a) For what value of c is f(x) a valid density? (b) What is the average number of copies sold by a platinum album? (c) What is the probability that a platinum album sells exactly 650,000 copies? (d) What is the probability that a platinum album sells between 450 and 750 thousand copies?
Expert Solution
Step 1

Here random variable X represent in thousands. 

Statistics homework question answer, step 1, image 1

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Research Design Formulation
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Similar 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