42 Barbara sends about 12 emails on an average 8‐hour work day from 9am to 5pm. (i) What is the probability that Barbara sends 5 emails before noon? (ii) Given that Barbara has sent exactly 5 emails by noon, what is the probability that she will send another 9 emails by the end of her work day?
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.
42 Barbara sends about 12 emails on an average 8‐hour work day from 9am to 5pm.
(i) What is the probability that Barbara sends 5 emails before noon?
(ii) Given that Barbara has sent exactly 5 emails by noon, what is the probability that she will send another 9 emails
by the end of her work day?
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