Question

The manager wants to advertise that anybody who isn't served within a certain number of minutes gets a free hamburger. But she doesn't want to give away free hamburgers to more than 1% of her customers. What number of minutes should the advertisement use

Answer 1

0.99

Step-by-step 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