(Answered)-If a researcher wishes to determine whether there is evidence - (2025 Updated Original AI-Free Solution

Question

1. If a researcher wishes to determine whether there is evidence that the mean family income in the U.S. is greater than $30,000, then:

   a one-tailed test should be utilized, in which the region of rejection is in the left (lower tail).

   either a one-tailed or a two-tailed test could be used.

   a one-tailed test should be utilized, in which the region of rejection is in the right (upper tail).

   a two-tailed test should be utilized.

QUESTION 13