Need help with this assignment! "Use the Week 4 data set...."

patternapparatus

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You manage Human Relations for your company. One of your sales managers has retired, leaving an opening. You are considering two different employees for the position. Both are highly qualified so you have decided to evaluate their sales performance for the past year.
Use the Week 4 Data Set [ file also attached to this thread ] to create and calculate the following in Excel®:

  1. Determine the range of values in which you would expect to find the average weekly sales for the entire sales force in your company 90% of the time.
    • Calculate the impact of increasing the confidence level to 95%?
    • Calculate the impact of increasing the sample size to 150, assuming the same mean and standard deviation, but allowing the confidence level to remain at 90%?
  2. Based on the calculated confidence interval for weekly sales on the sample of 50 reps at a 90% confidence level:
    • Calculate both Reps' average weekly performance and highlight if it is greater than the population mean.
  3. You want to determine whether there is a statistically different average weekly sales between Sales Rep A and Sales Rep B.
    • Create Null and Alternative Hypothesis statements that would allow you to determine whether their sales performance is statistically different or not.
    • Use a significance level of .05 to conduct a t-test of independent samples to compare the average weekly sales of the two candidates.
    • Calculate the p-value?
  4. Considering that individual you did not promote:
    • Determine whether this person's average weekly sales are greater than the average weekly sales for the 50 sales reps whose data you used to develop confidence intervals.
    • Create Null and Alternative Hypothesis statements that would allow you to determine whether the new Sales Manager's weekly average sales are greater than the sample of Sales Reps.
    • Use a significance level of .05 to conduct a t-test of independent samples to compare the average weekly sales of both.
    • Calculate the p-value?
 

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You manage Human Relations for your company. One of your sales managers has retired, leaving an opening. You are considering two different employees for the position. Both are highly qualified so you have decided to evaluate their sales performance for the past year.
Use the Week 4 Data Set [ file also attached to this thread ] to create and calculate the following in Excel®:

  1. Determine the range of values in which you would expect to find the average weekly sales for the entire sales force in your company 90% of the time.
    • Calculate the impact of increasing the confidence level to 95%?
    • Calculate the impact of increasing the sample size to 150, assuming the same mean and standard deviation, but allowing the confidence level to remain at 90%?
  2. Based on the calculated confidence interval for weekly sales on the sample of 50 reps at a 90% confidence level:
    • Calculate both Reps' average weekly performance and highlight if it is greater than the population mean.
  3. You want to determine whether there is a statistically different average weekly sales between Sales Rep A and Sales Rep B.
    • Create Null and Alternative Hypothesis statements that would allow you to determine whether their sales performance is statistically different or not.
    • Use a significance level of .05 to conduct a t-test of independent samples to compare the average weekly sales of the two candidates.
    • Calculate the p-value?
  4. Considering that individual you did not promote:
    • Determine whether this person's average weekly sales are greater than the average weekly sales for the 50 sales reps whose data you used to develop confidence intervals.
    • Create Null and Alternative Hypothesis statements that would allow you to determine whether the new Sales Manager's weekly average sales are greater than the sample of Sales Reps.
    • Use a significance level of .05 to conduct a t-test of independent samples to compare the average weekly sales of both.
    • Calculate the p-value?
What are your thoughts regarding the assignment?

Please share your work with us ...even if you know it is wrong.

If you are stuck at the beginning tell us and we'll start with the definitions.

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You manage Human Relations for your company. One of your sales managers has retired, leaving an opening. You are considering two different employees for the position. Both are highly qualified so you have decided to evaluate their sales performance for the past year.
Use the Week 4 Data Set [ file also attached to this thread ] to create and calculate the following in Excel®:

  1. Determine the range of values in which you would expect to find the average weekly sales for the entire sales force in your company 90% of the time.
    • Calculate the impact of increasing the confidence level to 95%?
    • Calculate the impact of increasing the sample size to 150, assuming the same mean and standard deviation, but allowing the confidence level to remain at 90%?
  2. Based on the calculated confidence interval for weekly sales on the sample of 50 reps at a 90% confidence level:
    • Calculate both Reps' average weekly performance and highlight if it is greater than the population mean.
  3. You want to determine whether there is a statistically different average weekly sales between Sales Rep A and Sales Rep B.
    • Create Null and Alternative Hypothesis statements that would allow you to determine whether their sales performance is statistically different or not.
    • Use a significance level of .05 to conduct a t-test of independent samples to compare the average weekly sales of the two candidates.
    • Calculate the p-value?
  4. Considering that individual you did not promote:
    • Determine whether this person's average weekly sales are greater than the average weekly sales for the 50 sales reps whose data you used to develop confidence intervals.
    • Create Null and Alternative Hypothesis statements that would allow you to determine whether the new Sales Manager's weekly average sales are greater than the sample of Sales Reps.
    • Use a significance level of .05 to conduct a t-test of independent samples to compare the average weekly sales of both.
    • Calculate the p-value?
Anyone with a minimal understanding of web security is not going to open an unknown ZIP file. Regardless, so far, you have given us nothing to do. What have you tried for these questions? How far have you gotten? Where, specifically, are you getting stuck?

Please be complete. Thank you! ;)
 
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