To solve problem A you should multiply 18 (her respiration rate) by 60 this will give you the total breaths per hour multiply that by 24 and that should be your final answer
The mean is 50 because if half get a "100" and the other half get a "0" the mean is 50. The standard deviation is 7.07 when you plug this into the 1-VARS stats on a calculator after putting this data in L1 List data set on the calculator.