For each problem, state HA and HO, find your test z, decide to reject/fail to reject, and interpret the decision.

1. A education research center claims that 57% of college students work year round. To test the claim we randomly select 300 college students and find that 171 of them work year round. Is there enough evidence to support the claim at the 0.01 level?

2. A humane society claims that less than 67% of U.S. households have pets. You test the claim by randomly selecting 600 U.S. households and find that 390 of them have pets. Is there enough evidence to support the claim at the 0.10 level?