The supervisor of a hotel housekeeping staff instructed a new housekeeper in the 45 ways a room must be cleaned if its guest has checked out but she forgot to mention that a less thorough method was to be used if the guest was staying additional nights. The next month the supervisor wonders why the new housekeeper is using many more packets of toiletries than the other housekeepers are. Also, it is taking the housekeeper the same amount of time to clean a recently vacated room as it does to clean a room that will be housing the same people for another night. The best explanation for the misunderstanding about the service to be provided by the housekeeper is , a risk incurred when services are described in words alone.

Monthly price data for mdltx and ekwax from yahoo finance is contained in the excel spreadsheet for this exercise. there are 37 months of price data for the period from september 2009 to september 2012. (note: these prices already incorporate dividend payments.) the 36 monthly returns for each fund are also provided. calculate average (arithmetic) monthly return and standard deviation for each fund. you can use the excel functions average, stdev to derive these stats. annualize these statistics. use the correl function in excel to derive the correlation coefficient between the two sets of returns. (annual correlation is the same as monthly correlation. hence, no need to annualize this stat.) using the annualized statistics derived in step 1, compute the expected return and standard deviation for portfolios containing from 0% to 100% mdltx (and 100% to 0% ekwax) by 10% increments. graph the resulting portfolios. based on your analysis, is there any potential benefit to diversification across these two funds? explain. of the 11 portfolios you graphed, which are efficient?