QUESTION 2 (50 MARKS)

Suppose the Sales manager of the Sweets-4-U2 chain of confectionary stores is interested in the relationship between Sales and Total costs for the Rejoice range of chocolates. i.e. how total cost is affected by sales, for the Rejoice product line.

The 52 Sales and Cost values for both types of chocolate are given in SWEETS-4-U2.xls.

Unless otherwise stated use a level of significance of ? = 0.05.)

(You can use Excel or your calculator for any calculations.)

[a] Obtain the scatter diagram, the covariance and the correlation coefficient for Total Costs and Sales for the Rejoice chocolates. Briefly explain what this graph and these values are telling us about the relationship between Total Costs and Sales

[b] Write down the two forms of the Population Regression function you would assume here. Briefly explain how we interpret the conditional mean E(Y | X) and the error term (?).

[c] Estimate the sample regression function. Write down your estimated model and briefly explain what the estimated intercept and estimated slope are telling us about the relationship between the Total Costs and Sales for Rejoice chocolates.

[d] Using the F statistic, the R-squared value and the p-value for the estimated slope briefly discuss whether this estimated model does or does not show that there is a significant relationship between Total Costs and Sales for Rejoice chocolates.

(With a sample of n = 52 you can assume that the critical values for the t statistic are the same as the critical values for a z statistic.)

Suppose the Sales manager of the Sweets-4-U2 chain of confectionary stores is interested in the relationship between Sales and Total costs for the Rejoice range of chocolates. i.e. how total cost is affected by sales, for the Rejoice product line.

The 52 Sales and Cost values for both types of chocolate are given in SWEETS-4-U2.xls.

Unless otherwise stated use a level of significance of ? = 0.05.)

(You can use Excel or your calculator for any calculations.)

[a] Obtain the scatter diagram, the covariance and the correlation coefficient for Total Costs and Sales for the Rejoice chocolates. Briefly explain what this graph and these values are telling us about the relationship between Total Costs and Sales

[b] Write down the two forms of the Population Regression function you would assume here. Briefly explain how we interpret the conditional mean E(Y | X) and the error term (?).

[c] Estimate the sample regression function. Write down your estimated model and briefly explain what the estimated intercept and estimated slope are telling us about the relationship between the Total Costs and Sales for Rejoice chocolates.

[d] Using the F statistic, the R-squared value and the p-value for the estimated slope briefly discuss whether this estimated model does or does not show that there is a significant relationship between Total Costs and Sales for Rejoice chocolates.

(With a sample of n = 52 you can assume that the critical values for the t statistic are the same as the critical values for a z statistic.)

Assessment 2- Short answer questions (Total – 30%)Please answer the following questions.1. If you suspect an older person has altered cognition, what five (5) actions would you take and why would you undertake...Assessment Task 3: Reflective JournalThis is a Personal Reflective Evaluation, describing your own leading and managing capabilities with a resulting personal development plan. This should be concise....MGT 314 ASSIGNMENTPart 1 - from Mid 2 syllabus1 Fit Fut Garments factory experienced a sudden spike in defects last month The data below shows defects for the months of March and April This is a major...You are required to write an academic essay to demonstrate proficiency in the language and literacy demands of academic writing. The topic chosen will require you to examine and critically evaluate an...All managers use computers and different types of software to make rational decisions. Can computers be a better alternative for manager's creativity and intuitive judgement while making decisions?...All managers use computers and different types of software to make rational decisions. Can computers be a better alternative for manager's creativity and intuitive judgement while making decisions?...Dynamic Modelling, Screen Design andTest Plan1. TIMELINES AND EXPECTATIONSDue date: Monday, Week 11, 11:55pm Weighting: 20%, maximum mark: 100.Minimum time expectation: 40 hours [4 out of the 40 hours...**Show All Questions**