The probability that fewer than 4 of them are successful are 0.9527
Explanation:
Given:
number of trials, n = 6
p(successful) = 0.85
P(x >= 4) = ?
The problem can be solved using binomial probability formula.
P(x >= 4) = 1 - binomcdf(6,0.85,4) = 1 - 0.0473
= 0.9527
Therefore, the probability that fewer than 4 of them are successful are 0.9527
