A vending machine has been known to be "finicky," that is, it will only sometimes accept dollar bills that are fed into it. Let X represent the number of bills accepted out of the last four tried. X 0 1 2 3 4 probability 0.05 0.15 0.15 0.22 0.33 Does the table below show a correct probability model for X? Yes, because all probabilities and all values for X are represented. Yes, because all of the probabilities are between 0 and 1. No, because the sample space is missing values for X. No, because the probabilities do not sum to 1.
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.
A vending machine has been known to be "finicky," that is, it will only sometimes accept dollar bills that are fed into it. Let X represent the number of bills accepted out of the last four tried.
| X | 0 | 1 | 2 | 3 | 4 |
|---|---|---|---|---|---|
| 0.05 | 0.15 | 0.15 | 0.22 | 0.33 |
Does the table below show a correct probability model for X?
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