You are flipping two coins toghether for 'n' times. Suppose, the mean/expected number of double heads (H,H) you get is 16. Find the value of n.
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 are flipping two coins toghether for 'n' times. Suppose, the mean/expected number of double heads (H,H) you get is 16. Find the value of n.
Let X be the random variable denoting the number of double heads obtained. The sample space associated with the experiment of tossing two coins simultaneously is,
The success is defined by the event of getting a double head, whose probability is given by,
Then, the probability of failure will be,
Then the probability of 'r' successes is given by,
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