Suppose that 36% of all voters prefer the Democratic candidate. Let X be the number of people who prefer the candidate when 21 people are surveyed at random. What is the distribution of X? X ~ ? B U N (,) Please show the following answers to 4 decimal places. What is the probability that exactly 7 voters who prefer the Democratic candidate in the survey? What is the probability that at most 7 voters who prefer the Democratic candidate in the survey? What is the probability that more than 7 voters who prefer the Democratic candidate in the survey
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.
Suppose that 36% of all voters prefer the Democratic candidate. Let X be the number of people who prefer the candidate when 21 people are surveyed at random.
- What is the distribution of X? X ~ ? B U N (,)
Please show the following answers to 4 decimal places.
- What is the
probability that exactly 7 voters who prefer the Democratic candidate in the survey? - What is the probability that at most 7 voters who prefer the Democratic candidate in the survey?
- What is the probability that more than 7 voters who prefer the Democratic candidate in the survey?
- What is the probability that between 5 and 12 (including 5 and 12) voters who prefer the Democratic candidate in the survey?
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