sta301 gdb complete idea solution

Probability of a robbery in the general store = 0.10
probability of a robbery in the book shop = 0.02

P(A)=n(A)/n(S)

i.              Neither business will be robbed.

Its mean dono main se koi bh nh So

P(A)=(not A)*(Not B)=(1-010)*(1-0.02)

P(A)=0.9*0.98=0.882

ii.             Either one or the other (but not both) will be robbed.

P (B) = 0.10 + 0.02 - (0.10)(0.02)

P (B) = 0.12-0.002=0.118