Chapter 11, Problem 16E

Solution

To find experimental probability.

  $\text{Probablity=}\frac{47}{70}$

Given information:

Coin is rolled 70 times.

23 times head is recorded.

Concept:

  $\text{Probablity}=\frac{\text{Favorable outcomes}}{\text{Total outcomes}}$

Calculation:

Here favorable outcome is tails that is $\left(70-23=47\right)$

Put values,

  $\text{Probablity=}\frac{47}{70}$

Conclusion:

Hence, $\text{Probablity=}\frac{47}{70}$ .