Answered

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the probability of a fair coin Landing heads up in one tossis 1/2 if a coin is tossed 20 times how many times would the coin be expected to land heads up A.20B.1C.2D.10

Sagot :

Answer

Option D is correct.

The coin is expected to land heads up 10 times.

Explanation

This is an expected value problem.

Expected value, the number of times an eventis expected to happen, is given as

E(X) = np

where

n = number of times the experiment is performed = 20

p = probability of our event happening (probability if the coin landing on the head) = ½

E(X) = Number of the coin expected to land on the head = ?

E(X) = np = (20) (½) = 10

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