SAT College

g) In a college 60% of students come from rural areas and 40% come from urban areas. On the

average 30% of students from rural areas study science and 50% of the students from urban areas study

science. A student is selected at random and is found to be a student of science. Find the probability

that he comes from a rural area.​

Answers

Answer 1

Answer:

100-(50+30)=100-80=20%

Explanation:

20% is the answer

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Answer 2

The probability that he comes from a rural area is to be calculated as

​100-(50+30)=100-80=20%. So, the probability that he comes from a rural area.​ So, the probability is 20%.

What is probability?

Probability deals with the likelihood of an event or phenomena occurring and is quantified as a number between 0 and 1 inclusive, where 0 indicates an impossible chance of occurrence and 1 denotes the certain outcome of an event. Joint probability refers to a statistical measure that determines the probability of two events occurring together and at the same point in time.

Joint probability is the probability of event Y occurring at the same time that event X occurs. Hence, joint probability is a measure of two events happening at the same time and can only be applied to situations where more than one observation can occur at the same time.  Mathematically, it is given by P (A and B) = P(A) * P(B) As in the given situation, the probability estimated is the probability to two events that iPhone is defective and it is manufactured by company A occurring at the same time, it is a joint probability.

Therefore, Probability deals with the likelihood of an event or phenomena occurring and is quantified as a number between 0 and 1 inclusive.

Learn more about Probability on:

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