Please explain. Also, how do I get P?

Spam: A researcher reported that 71.8% of all email sent in a recent month was spam. A system manager at a large corporation believes that the percentage at his company may be 78%. He examines a random sample of 500 emails received at an email server, and finds that 369 of the messages are spam. Can you conclude that the percentage of emails that are spam is less than 78% ? Use both a = 0.10 and a = 0.01 levels of significance and the P-value method with the TI-84 Plus calculator. Part: 0 / 4 Part 1 of 4 State the appropriate null and alternate hypotheses. Ho: H This hypotheses test is a (Choose one) test