Assume that 25.6% of people have sleepwalked. Assume that in a random sample of 1483 adults, 423 have sleepwalked. Assuming that the rate of 25.6% is correct, find the probability that 423 or more of the 1483 adults have sleepwalked. Is that result of 423 or more significantly high? What does the result suggest about the rate of 25.6%?
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.
Assume that 25.6% of people have sleepwalked. Assume that in a random sample of 1483 adults, 423 have sleepwalked.
- Assuming that the rate of 25.6% is correct, find the
probability that 423 or more of the 1483 adults have sleepwalked. - Is that result of 423 or more significantly high?
- What does the result suggest about the rate of 25.6%?
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