You have downloaded 20 new songs onto your phone as shown in the table. Assuming order does not matter, if you randomly play 8 from your new list of downloaded songs, what is the probability, without evaluating, that you will hear: at least one The Weeknd song? I have seen the solution but want to know why the P= 1- 13C20/20C8 formula is used Artist Number of Songs A Tribe Called Red 3 Drake 8 The Weeknd 7 Alessia Cara 2
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.
You have downloaded 20 new songs onto your phone as shown in the table.
Assuming order does not matter, if you randomly play 8 from your new list of downloaded songs, what is the
- at least one The Weeknd song?
I have seen the solution but want to know why the P= 1- 13C20/20C8 formula is used
| Artist | Number of Songs |
|---|---|
| A Tribe Called Red | 3 |
| Drake | 8 |
| The Weeknd | 7 |
| Alessia Cara | 2 |
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