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	31	50	32	17

if one order is selected, find the probability of getting an order that is not accurate.

the probability of getting an order that is not accurate is
(round to three decimal places as needed.)

Explanation:

Step1: Calculate total number of orders

The total number of accurate orders is $322 + 260+249 + 133=964$, and the total number of not - accurate orders is $31+50 + 32+17 = 130$. The total number of all orders is $964 + 130=1094$.

Step2: Calculate the probability

The probability $P$ of getting an order that is not accurate is the number of not - accurate orders divided by the total number of orders. So $P=\frac{130}{1094}\approx0.119$.

Answer:

$0.119$