1) The state police, using radar, checked the speeds (in mph) of 30 passing motorists at a checkpoint. The results are listed below:

44 38 41 50 36 36 43 42 49 48

35 40 37 41 43 50 45 45 39 38

50 41 47 36 35 40 42 43 48 33

Mean ______________ Median ______________ Mode ____________

Standard deviation (S_x) (Round to two-decimal places) _________________

Solution: We have the following output from Excel: