Answer:
215 students
Step-by-step explanation:
500 divided by 2 = 250
250 - 35 each= 215
ANSWER: 31.25%
Explaination:
Suppose (x+y)
is the binomial distribution with 5 trials. Given that, probability of exactly two success in five trials of a binomial experiment in which the probability of success is 50%.
So, x = 0.5 and y = 0.5
The term
5C2*x²*y³ representing 2 successes and 3 failures.
Now find the value of this term.
5C2*(0.5)²*(0.5)³ =
*
=10*0.03125
= 31.25%