SOLUTION: This is probability. I know I must use binomial distribution and I can figure out this with my TI-84, but I keep getting wrong answers. Here is the question: Of those mountain clim

Algebra ->  Probability-and-statistics -> SOLUTION: This is probability. I know I must use binomial distribution and I can figure out this with my TI-84, but I keep getting wrong answers. Here is the question: Of those mountain clim      Log On


   



Question 1116858: This is probability. I know I must use binomial distribution and I can figure out this with my TI-84, but I keep getting wrong answers. Here is the question: Of those mountain climbers who attempt Mt. McKinley, only 65% reach the summit. In a random sample of 10 mountain climbers who are going to attempt Mt. McKinley, calculate the following: what is the probability that 4 or fewer will reach the summit
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
P%28X%29=C%2810%2CX%29%2A%280.65%29%5EX%2A%281-0.65%29%5E%2810-X%29
.
.
.
.
.
.
.
Four or fewer means
P%28X%3C=4%29=P%280%29%2BP%281%29%2BP%282%29%2BP%283%29%2BP%284%29
P%28X%3C=4%29=0.09493