Kids with phones: A marketing manager for a phone company claims that more than 52% of children aged 8-12 have phones. In a survey of 808 children aged 8-12 by a national consumers group, 469 of them had phones. Can you conclude that the manager's claim is true? Use the = 0.10 level of significance and the P-value method with the TI-84 Plus calculator. Part: 0 / 5 Part 1 of 5 State the appropriate null and alternate hypotheses. Ho: H: This hypothesis test is a (Choose one) test. 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 70%. He examines a random sample of 500 emails received at an email server, and finds that 373 of the messages are spam. Can you conclude that the percentage of emails that are spam is greater than 70% ? Use both = 0.10 and = 0.01 levels of significance and the P-value method with the TI-84 Plus calculator. Part: 0 / 5 Part 1 of 5 (a) State the appropriate null and alternate hypotheses. Ho: H: O =0 This hypotheses test is a (Choose one) test. Quit smoking: In a survey of 444 HIV-positive smokers, 194 reported that they had used a nicotine patch to try to quit smoking. Can you conclude that less than half of HIV-positive smokers have used a nicotine patch? Use the = 0.10 level of significance and the P-value method with the TI-84 Plus calculator. Part: 0 / 5 Part 1 of 5 State the appropriate null and alternate hypotheses. Ho: H: This hypothesis test is a (Choose one) test.