Answer:
0.99
Explanation:
According to the given question, we need just only1% of orders to take longer than the specified time.
So, proportion = 1%
= 1/100
= 0.01.
It's possible to write it as P( X ≥ a) 0.01
We are aware that total area = 1
As a result, if the 0.01 proportion of orders is more than a, then;
The remainder will be less than or equal to a (1 - 0.01 = 0.99).
Therefore, P(0 ≤ x ≤ a) = 0.99
