Tom firstly tosses a fair coin 3 times. If none of these 3 results is head, he will toss this coin once more. Then if he still doesn’t get one head result, he will try once more. (In this game, Tom tosses a coin at least three times and up to five times.) If the random variable X denotes the number of tosses, what is X's expected value?
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.
Q19: Tom firstly tosses a fair coin 3 times. If none of these 3 results is head, he will toss this coin once more. Then if he still doesn’t get one head result, he will try once more. (In this game, Tom tosses a coin at least three times and up to five times.) If the random variable X denotes the number of tosses, what is X's
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