Write out a full hypothesis test for the following scenario. Include all 4 steps of the process given in the readings.

It is known from Census data that as of 2010, 16.3 percent of Americans did not have health insurance. A survey asks 350 Americans if they have health insurance, and 30 of them say they do not have health insurance. Should the researchers conclude that the percentage of Americans who do not have health insurance has declined since 2010?