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 less than 78% of emails are spam? Use both a = 0.10 and a = 0.01 levels of significance and the critical value method with the table. Part: 0 / 5 Part 1 of 5 State the appropriate null and alternate hypotheses. H: This hypothesis test is a (Choose one) V test