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chapter 4.3 homework
score: 27/42 answered: 22/33
question 23
0/1 pt 2 99 details
4.3 conditional probability. two - way conditional table.
giving a test to a group of students, the grades and gender are summarized below
| a | b | c | total | |
|---|---|---|---|---|
| female | 15 | 17 | 16 | 48 |
| total | 19 | 22 | 35 | 76 |
if one student is chosen at random, find the probability that the student was male and got a \b\. type as a fraction.
question help: video message instructor
Step1: Identify relevant values
The number of male students who got a "B" is 5, and the total number of students is 76.
Step2: Calculate probability
The probability $P$ of an event is the number of favorable outcomes divided by the total number of outcomes. So $P=\frac{\text{Number of male students with B}}{\text{Total number of students}}$.
$P = \frac{5}{76}$
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$\frac{5}{76}$