Question

Statistical tests: For each scenario below, identify the type of test you should use for the analysis.

82. Analyzing the effects of parasite infection on behavior of cockroaches by comparing behavior between infected and uninfected cockroaches during different times of the day. Trials are run in pairs every hour for 10 hours. Each pair of trials contain one infected cockroach and one uninfected cockroach (20 total cockroaches examined).

a) paired t-test

b) unpaired t-test

c) c² test (chi-squared test)

83. Which of the following represents the likelihood that the results obtained in the analysis are due to chance?

a) critical value

b) p-value

c) test statistic

d) degrees of freedom

Answer 1

82. Paired t-tests are used for comparing the means of two samples which consist of thhe same test subjects.
Unpaired t-tests are used for comparing the means of two samples which consist of distinct test subjects.
A chi-square test helps to find relationship between two categorical variables.

therefore, the Correct option is (a) paired t-test

83. In p-value, P stands for probability and it measures the likelihood of any observed difference between groups is due to chance.

The correct option is (b) p-value