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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 374 of the messages are spam. Can you conclude that the percentage of emails that are spam is greater than 70% ? Use both a=0.10 and a=0.01 levels of significance and the P-value method with the TI-84 Plus calculator. Part 1 of 5 (a) State the appropriate null and alternate hypotheses. Ho: p= 70 H₁:p> 70 This hypotheses test is a right-tailed test. Correct Answer: Ho:p=0.70 H₁:p>0.70 This hypotheses test is a right-tailed test. Part: 1/5 Part 2 of 5 X (b) Compute the value of the test statistic. Round the answer to at least two decimal places. X

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 374 of the messages are spam. Can you conclude that the percentage of emails that are spam is greater than 70% ? Use both a=0.10 and a=0.01 levels of significance and the P-value method with the TI-84 Plus calculator. Part 1 of 5 (a) State the appropriate null and alternate hypotheses. Ho: p= 70 H₁:p> 70 This hypotheses test is a right-tailed test. Correct Answer: Ho:p=0.70 H₁:p>0.70 This hypotheses test is a right-tailed test. Part: 1/5 Part 2 of 5 X (b) Compute the value of the test statistic. Round the answer to at least two decimal places. X

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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what is 1. P value 2. Z value 3. Critical value 4. Reject or do not reject 5. State conclusion
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 374 of the messages are spam. Can you conclude that the percentage of emails that are spam is greater than 70% ? Use both a=0.10 and a=0.01 levels of significance and the P-value method with the T-84 Plus calculator. Part 1 of 5 (a) State the appropriate null and alternate hypotheses. Ho: p= 70 H₁:p> 70 This hypotheses test is a right-tailed Correct Answer: Ho: p=0.70 H₁:p> 0.70 This hypotheses test is a right-tailed test. Part: 1 / 5 test. Part 2 of 5 X (b) Compute the value of the test statistic. Round the answer to at least two decimal places.
Transcribed Image Text: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 374 of the messages are spam. Can you conclude that the percentage of emails that are spam is greater than 70% ? Use both a=0.10 and a=0.01 levels of significance and the P-value method with the T-84 Plus calculator. Part 1 of 5 (a) State the appropriate null and alternate hypotheses. Ho: p= 70 H₁:p> 70 This hypotheses test is a right-tailed Correct Answer: Ho: p=0.70 H₁:p> 0.70 This hypotheses test is a right-tailed test. Part: 1 / 5 test. Part 2 of 5 X (b) Compute the value of the test statistic. Round the answer to at least two decimal places.
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