If I toss a coin 14 times, what is the probability of getting 4 or fewer heads?

解

I f I t oss a co in 14 t im es, w ha t i s t h e p ro babi l i t y o f g e tt in g 4 or f e w er h e a d s ?

\frac{1}{2}

十進法表記

0.5

解答ステップ

The possible outcomes when \mathrm{a coin is thrown} is

{H, T} .

Therefore, the number of possible outcomes:

2

The number of favorable outcomes of \mathrm{fewer heads}:

1

Probability

= \frac{number of favorable outcomes}{total number of outcomes}

= \frac{1}{2}