Use the data in the following table to answer the question. Assume that orders are randomly selected from those included in the table.
A | B | C | D | |
Order accurate | 313 | 265 | 241 | 131 |
Order not accurate | 40 | 57 | 39 | 14 |
If one order is randomly selected, find the probability of getting food that is not from restaurant D. (round to three decimal places)
Let , D be the event that the food is getting from restaurant D.
The total number of orders in a sample space is , n(S)=313+265+241+131+40+57+39+14=1100
Also , the total number of orders from restaurant D is , n(D)=131+14=145
Now , one order is randomly selected.
Therefore , the probability of getting a food that is from restaurant D is ,
P(D)=n(D) / n(S) = 145/1100=0.132
Therefore , the probability of getting food that is not from restaurant D = 1-P(D') = 1-0.132=0.868
Get Answers For Free
Most questions answered within 1 hours.