Question 2 (1 point)
A group of 28 people need to take an elevator to the top floor. The elevator can fit
seven. How many ways can they chose a group of 7 to ride the elevator on the first
time?

Determine the required value of the missing probability to make the distribution a discrete probability distribution. x p(x) 3 0.23 4 ? 5 0.51 6 0.08 p(4) = nothing  (type an integer or a decimal.)