Statistics
GM 03
Business Statistics
Assignment II
Assignment Code: 2012 GM03 B2 Last Date of Submission: 15th November 2012 Maximum Marks: 100
Attempt all the questions. All questions are compulsory and carry equal marks.
SECTION – A
1. a) Explain the need for different forecasting techniques. How can we evaluate as to how good is our forecast.
b) Collect data on the amount of expenditure you do each day for the next 25 days and based on the same forecast using 7day moving average the forecast for the 26th day. Evaluate the accuracy of your forecast.
c) Explain one application where you can apply Queuing Theory in daily life.
2. Customers from the Higher Income Group were sampled to test the quality of foods at one of the four major restaurant run by the Taj Group of Hotels. The four types of foods for which the quality were to be checked were Chicken Platter, Honey Chicken, Chicken Spinach, and Tandoori Chicken. Each of the respondent were asked to rate in a scale of 1- 10. The following were the data.
Chicken Platter Honey Chicken Chicken Spinach Tandoori Chicken
6 8 7 6
7 8 6 6
8 9 6 7
5 8 6 6
9 7 5 8
8 9 7 7
7 8 7 6
Is there sufficient evidence to indicate that the quality of food being served is different. Use 5% level of significance.
3. Maxwell’s Hot Chocolate is concerned about the effect of the recent year long coffee advertising campaign on hot chocolate sales. The average weekly hot chocolate sales two years ago was 984.7 pounds and the standard deviation was 72.6 pounds. Maxwell’s has randomly selected 30 weeks from the past year and found average sales of 912.1 pounds.
1. State appropriate hypotheses for testing weather hot chocolate sales have decreased.
2. At the 2 percent significance level, test the hypotheses.
4. A manufacturer was making sport shirts for men. The manufacturer was mainly catering to the needs of Baseball, Basketball, and Football
Business Statistics
Assignment II
Assignment Code: 2012 GM03 B2 Last Date of Submission: 15th November 2012 Maximum Marks: 100
Attempt all the questions. All questions are compulsory and carry equal marks.
SECTION – A
1. a) Explain the need for different forecasting techniques. How can we evaluate as to how good is our forecast.
b) Collect data on the amount of expenditure you do each day for the next 25 days and based on the same forecast using 7day moving average the forecast for the 26th day. Evaluate the accuracy of your forecast.
c) Explain one application where you can apply Queuing Theory in daily life.
2. Customers from the Higher Income Group were sampled to test the quality of foods at one of the four major restaurant run by the Taj Group of Hotels. The four types of foods for which the quality were to be checked were Chicken Platter, Honey Chicken, Chicken Spinach, and Tandoori Chicken. Each of the respondent were asked to rate in a scale of 1- 10. The following were the data.
Chicken Platter Honey Chicken Chicken Spinach Tandoori Chicken
6 8 7 6
7 8 6 6
8 9 6 7
5 8 6 6
9 7 5 8
8 9 7 7
7 8 7 6
Is there sufficient evidence to indicate that the quality of food being served is different. Use 5% level of significance.
3. Maxwell’s Hot Chocolate is concerned about the effect of the recent year long coffee advertising campaign on hot chocolate sales. The average weekly hot chocolate sales two years ago was 984.7 pounds and the standard deviation was 72.6 pounds. Maxwell’s has randomly selected 30 weeks from the past year and found average sales of 912.1 pounds.
1. State appropriate hypotheses for testing weather hot chocolate sales have decreased.
2. At the 2 percent significance level, test the hypotheses.
4. A manufacturer was making sport shirts for men. The manufacturer was mainly catering to the needs of Baseball, Basketball, and Football