An online bookstore is having a one-day sale. Softcover books are $4, hardcover books are $7, magazines are $3, and all digital downloads of books are $2. Let's say 150 customers purchased books in one form or another that day. Below are the frequencies in which customers purchased books: Books: Purchases: Softcover 42 Hardcover 28 Magazine 23 Digital Download 57 Based on the data above, which is the correct relative frequency with discrete random variable X = "the amount of money for a book?" x P(X = x) 2 0.38 3 0.15 4 0.28 7 0.19 x P(X = x) 2 0.28 3 0.19 4 0.15 7 0.38 x P(X = x) 1 0.38 2 0.15 3 0.28 4 0.19 x P(X = x) 2 0.15 3 0.38 4 0.19 7 0.28
An online bookstore is having a one-day sale. Softcover books are $4, hardcover books are $7, magazines are $3, and all digital downloads of books are $2. Let's say 150 customers purchased books in one form or another that day. Below are the frequencies in which customers purchased books: Books: Purchases: Softcover 42 Hardcover 28 Magazine 23 Digital Download 57 Based on the data above, which is the correct relative frequency with discrete random variable X = "the amount of money for a book?" x P(X = x) 2 0.38 3 0.15 4 0.28 7 0.19 x P(X = x) 2 0.28 3 0.19 4 0.15 7 0.38 x P(X = x) 1 0.38 2 0.15 3 0.28 4 0.19 x P(X = x) 2 0.15 3 0.38 4 0.19 7 0.28
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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An online bookstore is having a one-day sale. Softcover books are $4, hardcover books are $7, magazines are $3, and all digital downloads of books are $2.
Let's say 150 customers purchased books in one form or another that day. Below are the frequencies in which customers purchased books:
| Books: | Purchases: |
|---|---|
| Softcover | 42 |
| Hardcover | 28 |
| Magazine | 23 |
| Digital Download | 57 |
Based on the data above, which is the correct relative frequency with discrete random variable X = "the amount of money for a book?"
x P(X = x)
2 0.38
3 0.15
4 0.28
7 0.19
x P(X = x)
2 0.28
3 0.19
4 0.15
7 0.38
x P(X = x)
1 0.38
2 0.15
3 0.28
4 0.19
x P(X = x)
2 0.15
3 0.38
4 0.19
7 0.28
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