Statistical tests: For each scenario below, identify thetype of test you should use for the analysis.
79. Analyzing the effects of a drug on blood pressure level in astudy with 20 people. All 20 people are tested both before takingthe drug and after taking the drug.
a) paired t-test
b) unpaired t-test
c) c2 test (chi-squared test)
80. Analyzing the effects of a drug on blood pressure level in astudy with 30 people. 15 people take the drug and the other 15people take the placebo.
a) paired t-test
b) unpaired t-test
c) c2 test (chi-squared test)
81. Analyzing the effects on pollution on plant size in 10different regions in the US. In each region, 20 plants exposed topollution are measured and 20 plants not exposed to pollution aremeasured.
a) paired t-test
b) unpaired t-test
c) c2 test (chi-squared test)
