a)
dice - 6 different possibility
coin - 2 different possibility
hence sample space = 6*2 = 12
FALSE
b)
variance = (b-a)^2/12
= (8 +4)^2/12 = 12
FALSE
c)
An event is said to be a Certain Event if there is an absolute surety on the chance of its occurrence. The probability of certain event is said to be 1.
TRUE
d)
when A and B are disjoint
P(A and B) = 0
P(A or B) = P(A) + P(B) - P(A and B)
= P(A) + P(B)
= 0.1 + 0.4
=0.5
TRUE
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