Given : Two coins are tossed simultaneously
To find : mean (μ), variance (σ2)
Formula used :
When two coins are tossed simultaneously,
Total possible outcomes = TT , TH , HT , HH where H denotes head and T denotes tail.
P(0) = \(\frac{1}{4}\) (zero heads = 1 [TT])
P(1) = \(\frac{2}{4}\) (one heads = 2 [HT , TH])
P(2) = \(\frac{1}{4}\) (two heads = 1 [HH])
The probability distribution table is as follows,
Mean = 1
Variance = 0.5
