Question

use the data in the following table, which lists drive - thru order accuracy at popular fast food chains. assume that orders are randomly selected from those included in the table.

drive - thru restaurant

	a	b	c	d
order not accurate	36	56	37	14

if one order is selected, find the probability of getting food that is not from restaurant a.

the probability of getting food that is not from restaurant a is
(round to three decimal places as needed.)

Explanation:

Step1: Calculate total number of orders

$320 + 275+246 + 148+36 + 56+37 + 14=1132$

Step2: Calculate number of orders from Restaurant A

$320 + 36=356$

Step3: Calculate number of orders not from Restaurant A

$1132-356 = 776$

Step4: Calculate the probability

$P=\frac{776}{1132}\approx0.686$

Answer:

$0.686$