Giving a test to a group of students, the grades and gender are summarized below A В C Total Male 20 4 3 27 Female 7 5 16 28 Total 27 9. 19 55 If one student is chosen at random, Find the probability that the student was male OR got an "C".

Giving a test to a group of students, the grades and gender are summarized below A В C Total Male 20 4 3 27 Female 7 5 16 28 Total 27 9. 19 55 If one student is chosen at random, Find the probability that the student was male OR got an "C".

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

Giving a test to a group of students, the grades and gender are summarized below
A
В
C
Total
Male 20
4
3
27
Female
7
5
16
28
Total 27
9.
19
55
If one student is chosen at random,
Find the probability that the student was male OR got an "C".

Expert Solution

Step 1

The total number of males 27 and the number of student who got a C is 19.

Therefore, the total number of student who is male or got a C is 27 + 19 = 46.

Now, we have to subtract 3 males from 46 for avoiding the double count.

That is, $46 - 3 = 43$ .

Thus, the number of student who got an C is 43.

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