Its easier to find the complement of that instead
so you find the probability of 1 and 0
The .2 in the answer is the probability of each question 1/5
(10 C 0) x .2^0 (1-.2)^10-0=.1074
(10 C 1) x .2^1 (1-.2)^10-1=.2684
.2684+.1074=.3758 and that's the complement
so 1 - .3758= .6242
I too have a stats exam on this tomorrow lol
Answer:
Literally any number larger than 17. Example: 18.
y = 7/6.....................
2x^2+9x-6 i found this by subtracting 3x^2+7x from the other equation
(a+b+c)/2. this is your answer. if it had the numbers i would solve it fully, but it only has variables.
