Po Spam: A researcher reported that 71.8% of all email sent in a recent month was spam. A system manager at a large corp

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Po Spam A Researcher Reported That 71 8 Of All Email Sent In A Recent Month Was Spam A System Manager At A Large Corp 1 (25.84 KiB) Viewed 35 times

Po Spam A Researcher Reported That 71 8 Of All Email Sent In A Recent Month Was Spam A System Manager At A Large Corp 2 (41 KiB) Viewed 35 times

Po Spam A Researcher Reported That 71 8 Of All Email Sent In A Recent Month Was Spam A System Manager At A Large Corp 3 (18.3 KiB) Viewed 35 times

Po 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 780 He examines a random sample of 500 emails received at an email server, and finds that 367 of the messages are spam. Can you conclude that the percento e of emails that are spam differs from 78%? Use both a=0.05 and a=0.10 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. 00 > D- р This hypotheses test is a left-tailed test х

Part 2 of 4 Compute the P-value. Round the answer to four decimal places. P-value = 1 Х 5 Part 2/4 Part 3 of 4 Determine whether to reject H. At the a=0.05 level, do not reject the null hypothesis Ho. Х At the a=0.10 level, reject v the null hypothesis H..

Part 4 of 4 State a conclusion enough evidence to conclude that the percentage of emails At the 0.05 level of significance, there is that are spam differ from 78%. enough evidence to conclude that the percentage of emails At the a=0.10 level of significance, there is that are spam differs from 78%.