Practice 10 questions on CHEMISTRY4 - Chemistry 4 at Cape Peninsula University of Technology. Free AI-generated quiz on uNotes — track your score, retake anytime.
1Based on the provided data, if Sample 1 has measurements of 85.2 mV and 85.8 mV, what is its average potential?
2What statistical test was used to identify if any specific data point was an outlier in the potential measurements?
3According to the analysis, which of the following were cited as potential sources of systematic error in the fluoride determination?
4What was the null hypothesis ($H_0$) for the one-sample t-test performed to check for systematic error?
5Calculate the amount of Fluoride in mg for a sample with a concentration of 0.8 ppm and a dilution of 2 mL into 250 mL.
6Why was the null hypothesis rejected in the Grubbs' test for Sample 3?
7Which samples resulted in a calculated Fluoride concentration of exactly 0.4 ppm according to the calibration curve results?
8In the final calculation for percentage Fluoride, what total volume of original mouthwash stock solution was used as the divisor?
9The calculated t-value of -3683.3 led to the conclusion of systematic error. What does a t-value significantly further from zero than the critical value ($\\pm2.571$) indicate?
10Which of the following values are required to calculate the standard error in the provided t-test calculation?
