Claim: The owner of the website claims that the population mean visitors to the website is 354.
- Construct a 95% confidence interval for the population mean number of visitors to the website.
- Run a hypothesis test where α = 0.05 to test the claim.
- Note: You will use the values for mean, standard deviation, and sample size obtained in Part A.
Report Requirements
Include a screenshot with your work on the Week 5 Confidence Interval Download Week 5 Confidence IntervalOpen this document with ReadSpeaker docReaderExcel calculator with your name and date showing.
- Explain what the confidence interval reveals about the validity of the claim and why you reached that conclusion.
- Include a screenshot with your work on the Week 6 Hypothesis Test Download Week 6 Hypothesis TestOpen this document with ReadSpeaker docReaderExcel Calculator with your name and date showing.
- Clearly state your null and alternate hypotheses.
- Explain what the hypothesis test reveals about the validity of the claim and why you reached that conclusion.
- What conclusions would you draw about the population mean of visitors to the website based on this investigation? If the website needs to be hitting a mean of 354 visitors per day to make the companies that advertise on the website happy and retain their business, what business decisions would you recommend they make based on your investigation?
- Prepare your report using the Course Project Part B Deliverable.pptx template Download Course Project Part B Deliverable.pptx templateOpen this document with ReadSpeaker docReader.
- All DeVry University policies are in effect, including the Plagiarism Policy.
- The Course Project Part B report is due by the end of Week 7.
- The Course Project Part B is worth 126 total points. Review the following grading rubric.
Grading Rubric
| Category | Description | Points | % |
|---|---|---|---|
| Confidence Interval | The student constructs the correct confidence interval. A screenshot is present showing their work in the Week 5 Excel Calculator. The student provides a convincing explanation as to what the confidence interval reveals about the validity of the claim. | 32 | 25.4% |
| Hypothesis Test | The student reaches the correct conclusion based on the hypothesis test. A screenshot is present showing their work in the Week 6 Excel Calculator. The student provides a convincing explanation as to what the hypothesis test reveals about the validity of the claim. | 32 | 25.4% |
| Overall Conclusion | The student makes a convincing argument about what the investigation reveals about the validity of the claim and the business decision they would make based on the investigation as a whole. | 32 | 25.4% |
| Communication Skills | Writing, grammar, clarity, logic, cohesiveness, and adherence to the format previously described | 30 | 23.8% |
| Total | A quality presentation will meet or exceed all of the previous requirements. | 126 | 100% |
Rubric
Course Project Part B
| Criteria | Ratings | Pts |
|---|---|---|
This criterion is linked to a Learning OutcomeConfidence Interval | 32 pts | |
This criterion is linked to a Learning OutcomeHypothesis Test | 32 pts | |
This criterion is linked to a Learning OutcomeOverall Conclusion | 32 pts | |
This criterion is linked to a Learning OutcomeCommunication Skills | 30 pts | |
Total Points: 126 |