Based on this table, what is the probability that a student shows improvement if it is known that the student went to Saturday Academy?
Based on this table, what is the probability that a student shows improvement if it is known that the student went to Saturday Academy?
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...
Related questions
Question
A. 19%
B. 25%
C. 79%
D. 81%

Transcribed Image Text:A study has been conducted to determine whether attending Saturday Academy helps students raise their grade in math by one letter grade. The results are shown in the following table:
| | Improvement | No Improvement |
|-----------------------------|-------------|----------------|
| Attends Saturday Academy | 190 | 50 |
| Doesn’t Attend Saturday Academy | 120 | 200 |
Based on this table, what is the probability that a student shows improvement if it is known that the student went to Saturday Academy?
Expert Solution
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Step 1
The data is given by
Improvement | No improvement | Total | |
Attend | 190 | 50 | 240 |
Not attend | 200 | 200 | 400 |
Total | 390 | 250 | 640 |
Step by step
Solved in 2 steps
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