The probability that the value selected at random is greater than 30 will be found as follows: z-score is given by: z=(x-mu)/sig z=(30-30)/2=0 thus P(x>30)=1-P(X<30)=1-P(z<0)=1-0.5=0.5 Answer P(x>30)=0.5
C because you multiply the big number with the lower number then you add the number on top. 3 times 3 equals 9 plus 2 = 11. you keep the bottom number under your new number