A city maintenance crew is putting up lights in the town square for an upcoming holiday. 150 strands of each of two different brands of LED lights were purchased by he city to determine which brand works best. It is reasonable to assume that when he lights were selected for shipping, that they were selected at random from the entire supply of each brand. When the lights arrived it was discovered that 12 strands of Brand A were faulty and 16 strands of Brand B were faulty. a. State appropriate hypotheses for performing a significance test. o. Define the parameters of interest. . Calculate the standardized test statistic. d. Find the P-value. e. Does this provide convincing evidence of a difference in the proportion of faulty strands between the two brands at the a = 0.05 significance level?

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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.