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In a survey of 100 families having 2 or less boys. The following data was obtained. If one of the given families is chosen at random, the probability that the chosen family has 2 boys is:

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1925

1425

1725

925

answer is D.

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Detailed Solution

Given a survey of 100 families having 2 or less boys.
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Number of family having 2 boys = 36
And, total number of outcome = 100
The probability of an event =

\frac{Number of favorable outcomes}{Total number of outcomes}

Now, the probability that the chosen family has 2 boys is,

= Number of family having 2 boys Total number of outcomes = 36100

= 1850 = 925

The probability is

925

.
Option 4 is correct.

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