When 3,011 adults were surveyed in a Pew Research Center poll, 73% said that they use the internet. Is it okay for a newspaper reporter to write that 3/4 of all adults use the internet?

When testing gas pumps in Michigan for accuracy, fuel-quality enforcement specialists tested pumps and found that 1,299 of them were not pumping accurately and 5,686 pumps were accurate. Use a 0.01 significance level to test the claim of an industry representation that less than 20% of Michigan gas pumps are inaccurate.