Question

Kentucky Fried Chicken claims that 90% of its orders are delivered within 10 minutes of the time the order is placed. A sample of 150 orders revealed that 133 were delivered within the promised time. At the 0.10 significance level, can we conclude that less than 90% of the orders are delivered for less than 10 minutes?

Answer 1

The answer and procedures of the exercise are attached in the following archives.

Step-by-step explanation:

You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.