A second student keeps buying chocolate bars until he finds a prize voucher. Let Y denote the number of bars he buys before getting a bar with a prize voucher. a. What down the probability mass function of Y and verify whether it is pmf or not. b. If each bar costs 35 taka, what is the expected cost to the second student?
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 second student keeps buying chocolate bars until he finds a prize voucher. Let Y denote the number of
bars he buys before getting a bar with a prize voucher.
a. What down the probability mass
b. If each bar costs 35 taka, what is the expected cost to the second student?
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