Answer to Question #337357 in Statistics and Probability for ciara

Question

A claim states that the mean income of families in a certain city is at least 18,500. What kind of hypothesis does the claim state?

Answer 1

The null hypothesis states that the mean income of families in a certain city is will be greater than or equal to 18500.

The alternative hypothesis states that the mean income of families in a certain city is will be less than 18500.

$H_0: \mu\ge18500$

$H_1: \mu<18500$

B. This corresponds to a left-tailed (directional, one-tailed) test.