On january 1, year 1, a contractor began work on a $3.2 million construction contract that is expected to be completed in 3 years. the contractor concludes that it is appropriate to recognize revenue over time using the input method based on costs incurred (cost-to-cost method). at the inception date, the estimated cost of construction was $2.4 million. the following data relate to the actual and expected construction costs: year 1 year 2 year 3 costs incurred $720,000 $1,170,000 $1,110,000 expected future costs $1,680,000 $810,000 $0

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?