One hundred thirty boys and 130 girls were asked if they had ever been frightened by a television program. Forty of the boys and 70 of the girls said they had been frightened. One of these children is selected at random. (Enter your probabilities as fractions.) (a) What is the probability that he or she has been frightened? (b) What is the probability the child is a girl, given that he or she has been frightened?
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.
One hundred thirty boys and 130 girls were asked if they had ever been frightened by a television program. Forty of the boys and 70 of the girls said they had been frightened. One of these children is selected at random. (Enter your probabilities as fractions.)
(b) What is the probability the child is a girl, given that he or she has been frightened?
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