In a college biology class, only half of the class earned a passing grade. out of all the students, 45% studied and passed. what is the probability of someone having studied, given that they passed?

 Probability of someone having studied given that they passed is 0.9=0.9×100%=90%.

Step-by-step explanation:

Since we have given that

Probability of the class earned a passing grade = 50%

Probability of the class studied and passed = 45%

We need to find the probability of someone having studied given that they passed.

So, we will use "Conditional probability ":

Hence, Probability of someone having studied given that they passed is 0.9=0.9×100%=90%.

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