According to recent estimates, 12.1% of the 4,342 people in Custer County, Idaho, live in poverty. Assume

Question:

According to recent estimates, 12.1% of the 4,342 people in Custer County, Idaho, live in poverty. Assume that the people in this county represent a random sample of all people in Idaho. Based on this sample, test the claim that the poverty rate in Idaho is less than the national rate of 13.3%.