I. Solve the following problems involving Test of Difference of Means. Show your full solution including hypotheses and conclusion. 1. A statistics teacher teaches his subject in a conventional way. However, he began to teach Statistics with computer using statistics software in a second class. He gave an examination at the end of the quarter to both class and has observed that the students taught with computers tend to have higher scores than those taught using conventional way. The teacher decides to test the hypothesis, at 1% level of significance, that the students who are taught statistics with computers learn better than those taught using the conventional way. The data gathered is as follows: Use of Computers Hz = 92 S2 = 5 n2 = 10 Conventional Method Sample Mean Sample Standard Deviation Sample Size = 84 S, = 8 n; = 15

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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.