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You should consider the following instructions when answering the case study question and preparing your report: 1) For confidence intervals: • Check all assumptions. • Explain the results (decision). After each question, paste the Mega-Stat output. . II) For testing hypothesis: • State the null and alternative hypotheses. Check the necessary assumptions. • According to the question, make the test using the P-value, or the test statistic, or the C.I. • Make a conclusion (decision) statement in the words of the original problem. • After each question, paste the Mega-Stat output. III) For the report • Should be written on word document. • On the first page, write the names, student ID number, and section number. • Show all the steps of the solution, and after each question paste the Mega-Stat output. The report should have the following item 1 Title 2 Introduction 3 Main text 4 Write a full statistical report about relationship between the years of experience and salary for individuals employed inside and outside sales positions.
a Answer all of the following questions to help the manager preparing his report and after each question paste the Mega-Stat output. 1. Use descriptive statistics to summarize the data. 2. Is the mean annual salary for all salespersons different than 20000 AED? Use a 0.05 level of significance, and Construct a 95% confidence interval of the mean annual salary for all salespersons (test the hypotheses using both p value and C.I method) 3. Is there any significant difference of the mean salary due to position? Use a 0.05 level of significance 4. Construct a 95% confidence interval estimate of the mean salary difference for inside and outside salespersons. 5. Explain how your conclusion in part 3 can be driven from part 4, (test the hypothesis in question 3 using C.I in question 4). 6. Is there any significant difference of the mean salary due to years of experience? Use a 0.05 level of significance. 7. Give point estimates for the proportion of salespersons according to their positions. 8. Is there a difference between the proportions of inside salesperson between Low and High experience? Use a 0.05 level of significance. 9. Construct a 95% confidence interval of the difference in proportion of inside salespersons between Low and High experience. 10. Is the salesperson position depend on the salesperson experience? Use a 0.05 level of significance. 11. Use all the above questions to write a report to describe and make inference about relationship between the years of experience and salary for individuals employed inside and outside sales positions.