I need help to get question 8.

The densities have an uncertainty/stddev of 0.004. 1. A student makes ten measurements of the density of a gas (g/L) at a reduced pressure of 10.00 kPa and obtains the following values: 0.189, 0.167, 0.187,0.183, 0.186, 0.182,0.181, 0.184, 0.181, 0.177. Using a spreadsheet program (e.g., Microsoft Excel), calculate the following values and enter them according to the proper rules of significant figures. Do not use scientific notation and do not include units. Mean - Standard deviation = 2. Check the above data set for a possible outlier. From the list of values above, identify the most likely candidate and calculate its Q value based on a standard Q test. 3. (a) For the above data set, determine the critical Q value for a 90% CI. Based on this value, should the data point in Prob. 2 should be removed with 90% confidence (Y/N)? (b) For the above data set, determine the critical Q value for a 95% CI. Based on this value, should the data point in Prob. 2 should be removed with 95% confidence (Y/N)? 4. So in the end, and after accounting for the Q-test results for 90% CI, what should the student report for the density of the gas (give both the value and the standard deviation)? 5. From the student's density value, what is the molar mass of the gas (g/mol)? Assume the gas to behave ideally and the temperature to be exactly 25C. 6. Assuming the uncertainties in pressure and temperature to be negligible, what is the uncertainty in the molar mass (g/mol)? 7. Now report the experimental value of the molar mass of the gas in units of g/mol, according to proper significant figure guidelines. 8. Now consider the more usual case in which other values (e.g., P and/or T) also contain uncertainty. We will assume that the temperature sensor is very precise so that we can treat the uncertainty in T as negligible. However, our pressure gauge is accurate only to within 2%, so our pressure reading is now 10.00:0.20 kPa. Given the uncertainties in both density (as determined above) and pressure, what is the resulting uncertainty in the molar mass of the gas? Given the new uncertainty, report the new molar mass value in g/mol and by following the proper significant figure guidelines (report both the value and the uncertainty).