The probability that a student correctly answers on the first try (the event a. is p(a) = 0.2. if the student answers incorrectly on the first try, the student is allowed a second try to correctly answer the question (the event b). the probability that the student answers correctly on the second try given that he answered incorrectly on the first try is 0.5. find the probability that the student answers the question on the first or second try. a.0.90 b.0.40 c.0.10 d.0.70 e.0.60

The probability that the student answers the question on the first or second try is 0.60.

Given

P(A) = 0.2

.

The conditional probability of an event is when the probability of one event depends on the probability of occurrence of the other event.

When two events are mutually exclusive.

Then,

The first probability is;

Therefore,

The probability that the student answers the question on the first or second try is;

Hence, the probability that the student answers the question on the first or second try is 0.60.

To know more about Conditional probability click the link given below.

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1^3 + 2^3 + 3^3 +4^3 = (1+2+3+4)^2

step-by-step explanation:

i am only able to answer the first part. i am not sure about the second part. sorry