Question

The probability that Jase studies for his geometry test is

Answer 1

Answer: Probability that he makes an A is 0.91.

Step-by-step explanation:

Since we have given that

Probability that Jase studies for his geometry test = P(S) = $\dfrac{15}{16}$

Probability that Jase studies and makes an A = P(S∩A) = $\dfrac{17}{20}$

So, we need to find the probability that he makes an A i.e. P(A).

So, it becomes

$P(A).P(S)=P(A\cap S)\\\\P(A)\times \dfrac{15}{16}=\dfrac{17}{20}\\\\P(A)=\dfrac{\dfrac{17}{20}}{\dfrac{15}{16}}\\\\P(A)=\dfrac{0.85}{0.9375}\\\\P(A)=0.9066666\\\\P(A)=0.91$

Hence, Probability that he makes an A is 0.91.

Answer 2

The probability that Jase studies for his geometry test is

15

16

. The probability that Jase studies and makes an A is

17

20

. Jase studies for the test. What is the probability that he makes an A?