A student needs to know details of a class assignment that is due the next day and decides to call fellow class members for this information. She believes that for any particular call, the probability of obtaining the necessary information is 0.40. She decides to continue calling class members until the information is obtained. But her cell phone battery will not allow more than 8 calls. Let the random variable X denote the number of calls needed to obtain the information.a. Find the probability distribution of X.b. Find the cumulative probability distribution of X.c. Find the probability that at least three calls are required.
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 student needs to know details of a class assignment that is due the next day and decides to call fellow class members for this information. She believes that for any particular call, the
a. Find the probability distribution of X.
b. Find the cumulative probability distribution of X.
c. Find the probability that at least three calls are required.
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