200 students are enrolled in a first year statistics course. Two options are offered: the students may either attend regular lectures or they may take a reading-based learning program. 130 of the students say they prefer lectures, the other 70 say they prefer reading-based learning. The course coordinator wants to test two hypotheses: i) Students perform better in the final exam if they use the reading-based option. ii) Students perform better in the final exam if the

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A: Solution:

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A: It is needed to check whether the given study is observational study and experiment.

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Q: 1. a. What is categorical data. Why do we need different types of tests for categorical data? (3)…

A:

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A: This is a loaded question.

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A: Two events A and B are said to be independent, if P(A and B) = P(A)P(B).

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Q: What does hypothesis test indicates?

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A: From the given information we conduct paired t test