He 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. mean median b. compute the first and third quartiles. first quartile third quartile c. compute the range and interquartile range. range interquartile range d. compute the variance and standard deviation. round your answers to four decimal places. variance standard deviation e. do the data contain any outliers?