Given : A coin is tossed 4 times
To find : probability distribution of X and mean (μ) and variance (σ2)
Formula used :
A coin is tossed 4 times,
Total possible outcomes = 24 = 16
X denotes the number of heads
Let p be the probability of getting a head,
since the coin is tossed 4 times, n = 4
X can take the values of 1,2,3,4
The probability distribution table is as follows,
The probability distribution table is as follows,
Mean = 2
Variance = 1