We are learning to use the formula: P(A or B)=P(A)+P(B)-P(A and B) Now, the question is: Using data from a table listing drive-thru order accuracy at four different restaurants, if one order is randomly selected, find probability of getting an order from retaurant A or D or an order that is not accurate. A B C D Order Accurate 330 267 231 131 Order NOT Accurate 31 58 34 20
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.
We are learning to use the formula:
P(A or B)=P(A)+P(B)-P(A and B)
Now, the question is: Using data from a table listing drive-thru order accuracy at four different restaurants, if one order is randomly selected, find probability of getting an order from retaurant A or D or an order that is not accurate.
A B C D
Order Accurate 330 267 231 131
Order NOT Accurate 31 58 34 20
* I tried watching a solve from the professors video and she was adding the total # of errors from all restaurants + Errors from Restaurant A + Errors from Restaurant D/grand total of all transactions. So, I tried the identical solve and came up with a wrong answer.
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