Question

Question 2

Remember that new marketing gig that Connie landed with Cosmic Coffee? Let's think about the promotion she was
excited to roll out:
Get your made-to-order coffee drink within 3 minutes or it's free!
Recall that it's known from a previous study that the average time it takes for a customer to receive their drink is
2 minutes, 39 seconds, with a standard deviation of 20 seconds.
Part A
Calculate the z-score associated with the value of 3 minutes. Convert 3 minutes and the mean to seconds before doing
the calculation.

Answer 1

Sample anwer from Edm and Plato

Explanation:

Answer 2

9514 1404 393

Answer:

1.05

Explanation:

Following instructions, we have ...

Z = (X -μ)/σ

Z = (180 -159)/20 = 21/20

Z = 1.05

The Z-score associated with the value 3 minutes is 1.05.

_____

Additional comment

About 14.7% of customers will be getting free coffee.