A CEM 262 student determined the concentration of calcium in a solution using gravimetric analysis. The following concentrations were determined in the five trials: 6.004 g/L, 6.085 g/L, 6.029 g/L, 6.036 g/L, and 6.015 g/L. Use these values to answer the next six questions. Except where noted, report values with units. What is the mean value for this data set? Submit Answer Tries 0/99 What is the standard deviation of this data? Submit Answer Tries 0/99 What is the variance of this data? Submit Answer Tries 0/99 What is the RSD for this data? Please enter the numerical value for RSD without units. (The correct unit for RSD is ppt (parts per thousand), however currently CAPA is not recognizing ppt as a unit.) Submit Answer Tries 0/99 Based upon this data, at the 95% confidence level the true concentration (population mean) is expected to be between what two values? Maximum concentration? Submit Answer Tries 0/99 Minimum concentration? Submit Answer Tries 0/99

A CEM 262 student determined the concentration of calcium in a solution using gravimetric analysis. The following concentrations were determined in the five trials: 6.004 g/L, 6.085 g/L, 6.029 g/L, 6.036 g/L, and 6.015 g/L. Use these values to answer the next six questions. Except where noted, report values with units. What is the mean value for this data set? Submit Answer Tries 0/99 What is the standard deviation of this data? Submit Answer Tries 0/99 What is the variance of this data? Submit Answer Tries 0/99 What is the RSD for this data? Please enter the numerical value for RSD without units. (The correct unit for RSD is ppt (parts per thousand), however currently CAPA is not recognizing ppt as a unit.) Submit Answer Tries 0/99 Based upon this data, at the 95% confidence level the true concentration (population mean) is expected to be between what two values? Maximum concentration? Submit Answer Tries 0/99 Minimum concentration? Submit Answer Tries 0/99

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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he level of cretaine phosphokinase (CPK) in blood samples measures the amount of muscle damage for athletes. At Jock State University, the level of CPK was determined for each of 25 football players and 15 soccer players before and after practice. The two groups of athletes are trained independently. The data summary is as follows : For football players: Data for Football players n=25 Before Practice After Practice Difference (Before-After) Mean 254.73 225.6 29.13 Standard deviation 115.5 132.6 21.00 For soccer players: Data for Soccer players n=15 Before Practice After Practice Difference (Before-After) Mean 177.1 173.8 3.3 Standard deviation 60.7 64.4 6.88 Assume that all the data above are normal Test the claim that the mean CPK level has DECREASED for soccer players AFTER exercise (compared to the mean BEFORE exercise), using α=0.10. AFTER practice, do football players have a DIFFERENT mean CPK values compared to soccer players? Test this claim by…