mean = np = 20*0.5 = 10 Variance = npq = 20*0.5*0.5 = 5 Std dev = sqrt(npq) = sqrt(20*0.5*0.5) = 2.23
mean = 5, variance = 5
2/6=1/3
The probability of rolling a number greater than 1 is 5/6.
Usually, it takes 2-5 flips until a head appears.
Each toss has 2 outcomes; so the number of outcomes for 3 tosses is 2*2*2 = 8
Mean = 2. Variance = 1.
mean = 5, variance = 5
Yes, quite easily.
The number of combinations - not to be confused with the number of permutations - is 2*21 = 42.
7878
48
There are 72 permutations of two dice and one coin.
Tossed - Toased
The number of sequences is 27 or 128.
tossed
The suffix for tossed is ed
The probability that the die tossed will land on a number that is smaller than 5 is 4/6 or 2/3. Smaller than 5 is 1 - 4 and 6 is the sample space.