What divergences arise between equilibrium output and efficient output when (a) negative externalities and (b) positive externalities are present? How might government correct these divergences? Cite an example (other than the text examples) of an external cost and an external benefit.

Symantec corp., located in cupertino, california, is one of the world's largest producers of security and systems management software. the company's consolidated balance sheets for the 2009 and 2008 fiscal years included the following ($ in thousands): current assets: receivables, less allowances of $21,766 in 2009 and $24,089 in 2008 $ 838,010 $ 758,700 a disclosure note accompanying the financial statements reported the following ($ in thousands): year ended 2009 2008 (in thousands) trade accounts receivable, net: receivables $ 859,776 $ 782,789 less: allowance for doubtful accounts (8,938) (8,990) less: reserve for product returns (12,828) (15,099) trade accounts receivable, net: $ 838,010 $ 758,700 assume that the company reported bad debt expense in 2009 of $2,000 and had products returned for credit totaling $3,230 (sales price). net sales for 2009 were $6,174,800 (all numbers in thousands).required: what is the amount of accounts receivable due from customers at the end of 2009 and 2008? what amount of accounts receivable did symentec write off during 2009? what is the amount of symentec’s gross sales for the 2009 fiscal year? assuming that all sales are made on a credit basis, what is the amount of cash symentec collected from customers during the 2009 fiscal year?

The wall street journal reported that walmart stores inc. is planning to lay off 2,300 employees at its sam's club warehouse unit. approximately half of the layoffs will be hourly employees (the wall street journal, january 25-26, 2014). suppose the following data represent the percentage of hourly employees laid off for 15 sam's club stores. 55 56 44 43 44 56 60 62 57 45 36 38 50 69 65 (a) compute the mean and median percentage of hourly employees being laid off at these stores. (b) compute the first and third quartiles. (c) compute the range and interquartile range. (d) compute the variance and standard deviation. (e) do the data contain any outliers? (f) based on the sample data, does it appear that walmart is meeting its goal for reducing the number of hourly employees?

Issued to the joint planning and execution community (jpec) initiates the development of coas; it also requests that the supported ccdr submit a commander's estimate of the situation with a recommended coa to resolve the situation (joint force command and staff participation in the joint operation planning and execution system, page 10)