Use the data in the following table, which lists drivethru order accuracy at popular fast food chains. Assume that orders are randomly selected from those included in the table.
Drivethru Restaurant 


A 
B 
C 
D 

Order Accurate 
337 
278 
231 
123 
Order Not Accurate 
36 
52 
40 
15 
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
Use the data in the following table, which lists drivethru order accuracy at popular fast food chains. Assume that orders are randomly selected from those included in the table.
Drivethru Restaurant 


A 
B 
C 
D 

Order Accurate 
316 
270 
241 
148 
Order Not Accurate 
37 
60 
30 
15 
If one order is selected, find the probability of getting an order from Restaurant A or an order that is accurate. Are the events of selecting an order from Restaurant A and selecting an accurate order disjoint events?
The probability of getting an order from Restaurant A or an order that is accurate is
To calculate the probability we will use addition theorem of probability.
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