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 
327 
278 
241 
125 
Order Not Accurate 
33 
59 
31 
10 
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
nothing.
(Round to three decimal places as needed.)
Are the events of selecting an order from Restaurant C and selecting an inaccurate order disjoint events?
The events
▼
are
are not
disjoint because it
▼
is not
is
possible to
▼
receive an inaccurate order from Restaurant C.
pick an accurate order.
pick an order from Restaurant A, B, or D.
Total no. of orders = 33+59+31+10+327+278+241+125 = 1104.
No. of orders that is not accurate = 33+59+31+10 = 133.
No. of orders that is from Restaurant C = 241+31 = 272.
No. of orders that is not accurate and from Restaurant C =
31.
Probability of getting an order from Restaurant C or an order that
is not accurate = (133+27231)/1104 = 0.339.
Are the events of selecting an order from Restaurant C and
selecting an inaccurate order disjoint events? The events
are not disjoint because it is possible to receive an inaccurate
order from Restaurant C.
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