Answer:
it's x= 1±sqrt(47)
Step-by-step explanation:
Answer:
0.06597
Step-by-step explanation:
Given that thirty-seven percent of the American population has blood type O+
Five Americans are tested for blood group.
Assuming these five Americans are not related, we can say that each person is independent of the other to have O+ blood group.
Also probability of any one having this blood group = p = 0.37
So X no of Americans out of five who were having this blood group is binomial with p =0.37 and n =5
Required probability
=The probability that at least four of the next five Americans tested will have blood type O+
=
Well you could multiply both fractions by 2 (and get 6/8x4/6) and 3 (which would be 9/12x6/9) both of which would give you 1/2 just like 3/4x2/3 would. Or you could use 2/5x5/4 and 1/3x3/2 both which would also give you half :) hope this helps
Y could be any number tho
B 49 is the correct answer