Question

Three coins are tossed simultaneously 200 times with the following frequencies of different outcomes:​

If the three coins are simultaneously tossed again, compute the probability of 2 heads coming up.​

Outcomes	Frequency
3 heads	23
2 heads	72
1 head	77
No head	28

Answer 1

Number of times 2 heads come up = 72
Total number of times the coins were tossed = 200
$\therefore$ The probability of 2 heads coming up
$=\frac{\text{Number of times 2 heads come up}}{\text{Total number of trials}}=\frac{72}{200}=\frac{9}{25}$