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Section 4.2 Homework
3. 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 |
321 |
274 |
237 |
131 |
|
Order Not Accurate |
33 |
51 |
38 |
20 |
If one order is selected, find the probability of getting an order that is not accurate or is from Restaurant C. Are the events of selecting an order that is not accurate and selecting an order from Restaurant C disjoint events?
The probability of getting an order from Restaurant C or an order that is not accurate is _________
Are the events of selecting an order from Restaurant C and selecting an inaccurate order disjoint events?
The events ________ disjoint because it ______ possible to _________