Given:
Number of times head shows up out of 4 trials = 3
Number of trials = 20
Solution
The number of times (N) head shows up for each trial:
[tex]\begin{gathered} N\text{ = }\frac{Number\text{ of times head shows up out of 4 trials}}{Number\text{ of trials}} \\ =\text{ }\frac{3}{4} \end{gathered}[/tex]The number of times we would expect head to show up for 20 trials:
[tex]\begin{gathered} =\text{ }\frac{3}{4}\text{ }\times\text{ 20} \\ =\text{ 15 times} \end{gathered}[/tex]Answer: 15 times
