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   ABCD Order Accurate328328276276238238140140 Order Not Accurate4040606033331717 If one order is​ selected, find the probability of getting food that is not from Restaurant A.The probability of getting food that is not from Restaurant A is

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Asked Feb 21, 2019
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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
328328
276276
238238
140140
Order Not Accurate
4040
6060
3333
1717
 
If one order is selected, find the probability of getting food that is not from Restaurant A.
The probability of getting food that is not from Restaurant A is
 
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Expert Answer

Step 1

Concept of probability:

Probability deals with the likelihood of occurrence of a given event. The probability value lies between 0 and 1. An event with probability 1 is considered as certain event and an event with probability 0 is considered as an impossible event. The probability of 0.5 infers of having equal odds of occurring and not occurring of an event.

The general formula to obtain probability of an event A is,

P(A) = (number of favourable elements for event A)/(Total number of elements in the sample space).

The basic properties of probability are given below:

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Step 2

Find the probability of getting food that is not from restaurant A:

Given that from the list of randomly selected orders from a restaurant, one order is selected.

The total number of orders from restaurant A is, the sum of accurate orders from restaurant A and not accurate orders from restaurant A.

That is, the total number of orders from restau...

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