How do I figure this out? Do I use Z or T? What is the null and alternative hypothesis? Is it null=65% and alternative < 65%?

3.Labor Day was created by the US Labor movement over 100 years ago.It was subsequently adopted by most states as an official holiday.In a recent poll by the Gallup organization, 1003 randomly selected adults were asked whether they approve of labor unions, and 65% said yes.

• In 1936, about 72% of Americans approved of labor unions.At the 5% significance level, does the data prove that the support of labor unions has decreased since 1936?

State the null and alternative hypotheses