Read the following then choose the appropriate test and name the population(s). A researcher asks a random sample of 200 men whether they had made an online purchase in the last three months. He wants to determine whether the proportion of men who make online purchases is less than 0.18.
A)Two-proportion z-test; the population is the 200 men surveyed.
B)One-proportion z-test; the population is all men.
C)One-proportion z-test; the population is all adults who make online purchases.
D)Two-proportion z-test; one population is all men who make online purchases and the other population is all men who do not make online purchases.

Question

Quizplus · Accepted Answer

The correct choice is a one-proportion z-test because the researcher is interested in comparing the proportion of a single sample (men who made an online purchase) to a known proportion (0.18). The population in this context is all men, as the researcher's goal is to generalize the findings from the sample of 200 men to the broader population of all men.

Read the Following Then Choose the Appropriate Test and Name