Revision as of 01:30, 26 June 2024 by Admin (Created page with "'''Solution: C''' The number of boys say <math>N</math> is less than equal to 1. The probability that there are no boys only occurs when we have 3 girls and this equals (1/2)<sup>3</sup>. Hence the expected number of boys equals 1-0.125 = 0.875.")
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Exercise

ABy Admin
Jun 26'24

Answer

Solution: C

The number of boys say [math]N[/math] is less than equal to 1. The probability that there are no boys only occurs when we have 3 girls and this equals (1/2)3. Hence the expected number of boys equals 1-0.125 = 0.875.

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