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Section 4.2 Homework
1.
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 |
312 |
275 |
234 |
138 |
|
Order Not Accurate |
30 |
53 |
31 |
13 |
If two orders are selected, find the probability that they are both from Restaurant D.
- Assume that the selections are made with replacement. Are the events independent?
- Assume that the selections are made without replacement. Are the events independent?
a. Assume that the selections are made with replacement. Are the events independent?
The probability of getting two orders from Restaurant D is _______
The events ________ independent because choosing the first order _______ the probability of the choice of the second order.
b. Assume that the selections are made without replacement. Are the events independent?
The probability of getting two orders from Restaurant D is
The events _______ independent because choosing the first order _______ the probability of the choice of the second order.