1
answer
0
watching
339
views
19 Nov 2019
For the final project of an analytical chemistry laboratory course, the students were asked to quantify the lead (Pb^2+) content in a drinking water sample. To receive a passing grade for the project, the students must produce a result (Pb^2+ concentration) that agrees with the result obtained by the course professor, who was using the same method, at the 95% confidence level. The mean (x), standard deviation (S_x) and number of replicate measurements (n) are shown below for the data obtained by the professor (p) and one student (s) chosen at random. Calculate the F value. Are the standard deviations from the professor's and student's data sets significantly different from each other at the 95% confidence level (Yes or No)? The value of F_table can be found in the table of critical F values. Calculate the value of t_calc to compare the data sets from the student and the professor at the 95% confidence level. Did the student receive a passing grade for the final project? A list of t values can be found in the Student's t table.
For the final project of an analytical chemistry laboratory course, the students were asked to quantify the lead (Pb^2+) content in a drinking water sample. To receive a passing grade for the project, the students must produce a result (Pb^2+ concentration) that agrees with the result obtained by the course professor, who was using the same method, at the 95% confidence level. The mean (x), standard deviation (S_x) and number of replicate measurements (n) are shown below for the data obtained by the professor (p) and one student (s) chosen at random. Calculate the F value. Are the standard deviations from the professor's and student's data sets significantly different from each other at the 95% confidence level (Yes or No)? The value of F_table can be found in the table of critical F values. Calculate the value of t_calc to compare the data sets from the student and the professor at the 95% confidence level. Did the student receive a passing grade for the final project? A list of t values can be found in the Student's t table.
Nestor RutherfordLv2
31 Jan 2019