Have you ever tried to get out of jury duty? About 25% of those called will find an excuse (work, poor health, travel out of town, etc.) to avoid jury duty.† (a) If 12 people are called for jury duty, what is the probability that all 12 will be available to serve on the jury? (Round your answer to three decimal places.) (b) If 12 people are called for jury duty, what is the probability that 6 or more will not be available to serve on the jury? (Round your answer to three decimal places.) (c) Find the expected number of those available to serve on the jury. What is the standard deviation? (Round your answers to two decimal places.) ? = people ? = people What is the smallest number of people n that the jury commissioner contact to be at least 95.9% sure of finding at least 12 people who are available to serve? (Enter your answer as a whole number.) people
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.
Have you ever tried to get out of jury duty? About 25% of those called will find an excuse (work, poor health, travel out of town, etc.) to avoid jury duty.†
(b) If 12 people are called for jury duty, what is the probability that 6 or more will not be available to serve on the jury? (Round your answer to three decimal places.)
(c) Find the expected number of those available to serve on the jury. What is the standard deviation? (Round your answers to two decimal places.)
| ? = people |
| ? = people |
What is the smallest number of people n that the jury commissioner contact to be at least 95.9% sure of finding at least 12 people who are available to serve? (Enter your answer as a whole number.)
people
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