Five years ago 54% of American families owned stocks or stock funds.the Investment Company Institute sampled 400 American families to estimate that the percent owning stocks or stock funds is decreased or not. And find 210 owns stock . What is the test statistics for your hypothesis test (round to 3 decimals)?
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.
Five years ago 54% of American families owned stocks or stock funds.the Investment Company Institute sampled 400 American families to estimate that the percent owning stocks or stock funds is decreased or not. And find 210 owns stock . What is the test statistics for your hypothesis test (round to 3 decimals)?
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