A type of chocolate bar contains, with probability 0.1, a prize voucher. Whether or not a bar contains a voucher is independent of other bars. A hungry student buys 8 chocolate bars. Let X denote the number of vouchers that she finds. (i) What sort of distribution does X have?(ii) How likely is it that the student finds no vouchers?(iii) How likely is it that she finds at least two vouchers?(iv) What is the most likely number of vouchers that she finds?
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 type of chocolate bar contains, with
(i) What sort of distribution does X have?
(ii) How likely is it that the student finds no vouchers?
(iii) How likely is it that she finds at least two vouchers?
(iv) What is the most likely number of vouchers that she finds?
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