Question

question 2 (1 point) ✓ saved
to test the hypothesis that the average fear among republican voters is less than 50
points on the 100 - point scale we should conduct a
t - test
z - test
two - sample t - test
two - sample paired t - test

Explanation:

A t - test is used when the population standard deviation is unknown. In this case, we are testing a hypothesis about the mean (average fear) of a single population (Republican voters). A z - test is used when the population standard deviation is known. A two - sample t - test is used to compare means of two independent samples. A two - sample paired t - test is used for paired or dependent samples. Since we are dealing with a single sample and the population standard deviation is likely unknown (as it is not mentioned), a t - test is appropriate.

Answer:

t - test