Final Exam

1.A researcher wants to determine if there is a statistically significant association between a person's preferred social media platform (e.g., Facebook, Instagram, Twitter) and their primary news source (e.g., Online, Television, Print). Which statistical test is most appropriate for this analysis?

2.When comparing the effectiveness of two different drugs on reducing blood pressure, a researcher would use an independent t-test. What core assumption about the data must be met for the results of this test to be valid?

3.A researcher performs a Chi-square test on a 2x2 contingency table but finds that more than 20% of the cells have an expected count less than 5. Which test is the most suitable alternative?

4.The Mann-Whitney U test is often referred to as the non-parametric equivalent of the independent t-test.

5.Which of the following is NOT a common software package or programming language used by statisticians to perform tests like the t-test and Chi-square test?

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