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 324 271 248 121 Order Not Accurate 35 54 32 13 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 nothing. (Round to three decimal places as needed.)
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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Drive-thru Restaurant
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|||
|---|---|---|---|---|
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A
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B
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C
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D
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Order Accurate
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324
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271
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248
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121
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Order Not Accurate
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35
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54
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32
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13
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Total number of orders = 324+271+248+121+35+54+32+13 = 1098
The orders of restaurant A are the accurate or the not accurate = = 0.326
Order Accurate = 324+271+248+121 = 964
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