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 Accurate
313
279
234
133
Order Not Accurate
36
55
37
17
If two orders are​ selected, find the probability that they are both accurate. Complete parts​ (a) and​ (b) below.
Question content area bottom
Part 1
a. Assume that the selections are made with replacement. Are the events​ independent?
The probability is enter your response here. The events
▼
are
are not
independent.
​(Do not round until the final answer. Round to four decimal places as​ needed.)

Answer 1

The events are not disjoint because it is possible to receive an accurate order from Restaurant A.

Explanation:

The probability of getting an order from Restaurant A or an order that is accurate is 0.907.

Add up all numbers in the table. 1121.

Add up all numbers in the order accurate data set plus the A order, not accurate data set. 1017

Take 1121/1017=0.907

The events are not disjoint because it is possible to receive an accurate order from Restaurant A.