Opinion reported that 5% of Malaysians are afraid of being alone in a house at night. If a random sample of 20 Malaysian is selected, find these probabilities by using the binomial table. (a) Write the distribution of X. (b) Calculate the probability that there are exactly two people in the sample who are afraid of being alone at night. (c) Calculate the probability that there are at most three people in the sample who are afraid being alone at night. (d) Calculate the mean and standard deviation of binomial distribution X.
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.
Public Opinion reported that 5% of Malaysians are afraid of being alone in a house at night. If a random sample of 20 Malaysian is selected, find these probabilities by using the binomial table.
(a) Write the distribution of X.
(b) Calculate the
(c) Calculate the probability that there are at most three people in the sample who are afraid being alone at night.
(d) Calculate the mean and standard deviation of binomial distribution X.
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