Use the data in the following? table, which lists? drive-thru order accuracy at

Question

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.

A

B

C

D

Order Accurate

316

280

230

126

Order Not Accurate

31

51

37

14

If three different orders are? selected, find the probability that they are all from restaurant

Upper C.

The probability is

nothing .

?(Round to four decimal places as? needed.)

?Drive-thru Restaurant Open in StatCrunch + Copy to Clipboard + Open in Excel +

A

B

C

D

Order Accurate

316

280

230

126

Order Not Accurate

31

51

37

14

Explanation / Answer

                             A                B                   C             D                       Total

Order Accurate        316          280               230           126                         952

Order Not Accurate 31           51                  37               14                       133

Total                      347           331               267           140                       1085

p = Probability that order from Restaurent C = 267/1085 = 0.2461

So,

Probability that all 3 orders are from Restaurent C = p3 = 0.24613 = 0.0149

So,

Answer is:

0.0149

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