Mr. Brown, a sole trader, has provided the following information for the year ended 31 December 2021: 

Rs 

Opening receivables debit balances 211,250

Opening receivables credit balances 1,750 

Sales (90% credit, 10% cash) 1,110,500 

Credit sales returns 17,130 

Cash received from customers (95% from credit customers) 895,400 

Irrecoverable debts 17,700 

Irrecoverable debts previously written off recovered (these funds have been included in cash receipts above) 2,310 

Opening allowance for receivables 13,320 

Contra entry with balances on payables ledger 5,970 

Closing receivables credit balances 980 

Required: 

Using a receivables control account, compute the closing receivables amount for Mr. Brown as at 31 December 2021. 

Is there a difference in the price of groceries sold by the two retailers Target and Walmart? The data set Groceries contain a sample of grocery items and their prices advertised on their respective web sites on one specific day, and is available from the package resampledata, available on CRAN. We showed you how to install this package during Workshop 6. a) Inspect the data set, then explain why this is an example of matched pairs data. b) Compute summary statistics of the prices for each store. c) Conduct a permutation test to determine whether or not there is a difference in the mean prices. d) Create a histogram of the difference in prices. What is unusual about Quaker Oats Life cereal? e) Redo the hypothesis test without this observation. Do you reach the same conclusion?