Question

5 candidates apply of job interview, probability of selection is 1/2 each

What is probability of selection of atleast 2 candidate​

Answer 1

Answer:

12

Step-by-step explanation:

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Answer 2

13/16 is an appropriate answer.

Given:

• The possibility of a candidate getting selected = 1/2.
• The general quantity of applicants = 5.

To find:

• The possibility that at the least applicants are selected.

Solution:

• Probability of a candidate getting selected = 1/2
• Probability of a candidate now no longer getting decided on = 1/2
• Probability that at the least  applicants can be selected = P(2 applicants decided on) + P(3 selected applicants) + P(4 selected applicants) + P(5 selected applicants).
• ⇒5C2 (½)²(½)³ + 5C3 (½)³(½)² + 5C4 (½)⁴(½) + 5C5(½)⁵
• ⇒ 5/16 + 5/16 + 5/32 + 1/32.
• ⇒ 13/16.

Thus the required probability is 13/16.

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