Two shooters, rodney and philip, practice at a shooting range. they fire 100 rounds each at separate targets. the targets are marked with circles and each bullet hitting a particular circle gets them a particular number of points. 50 rounds are selected at random. the sample mean scores of rodney and philip are 9 and 7, respectively. and, their variances are 0.25 and 0.36, respectively. the standard error of the difference between their mean scores is

On january 8, the end of the first weekly pay period of the year, regis company's payroll register showed that its employees earned $22,760 of office salaries and $70,840 of sales salaries. withholdings from the employees' salaries include fica social security taxes at the rate of 6.20%, fica medicare taxes at the rate of 1.45%, $13,260 of federal income taxes, $1,450 of medical insurance deductions, and $860 of union dues. no employee earned more than $7,000 in this first pay period. required: 1.1 calculate below the amounts for each of these four taxes of regis company. regis’s merit rating reduces its state unemployment tax rate to 3% of the first $7,000 paid to each employee. the federal unemployment tax rate is 0.60