L. (6 Polnts) Comparlson of two data sets A laboratory in lowa City and a labora

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L. (6 Polnts) Comparlson of two data sets A laboratory in lowa City and a laboratory in Madison tested a sample independently and generated the following results: Concentration 0M) Lablowa CityLab Madison Trial 1 Trial 2 Trial 3 0.6411 0.6398 0.6417 0.6329 0.6392 0.6456 Are the results from the two laboratories statistically different? IL. (6 Points) Comparison of two data sets A laboratory in lowa City and a laboratory in Madison tested a sample independently and generated the following results: Concentration (M) Lab lowa City Lab Madison Trial 1 Trial 2 Trial 3 0.6397 0.6388 0.6289 0.6060 0.6185 0.6201 Are the results from the two laboratories statistically different? IlI. (8 Points) Calculating errors in the final results A Ba(OH)2 solution was standardized with KHP through acid-base titration. Calculate the concentration of Ba(O1H)2 and its associated error based on the following experiment data. value SD mass KHP a 000 MW (g/m101) | 204.2212 | 0.038 Vaon (mL) 38.7o .o5 pe here to search

Explanation / Answer

1.

USING ONE-WAY ANOVA test

The f-ratio value is 0.19394. The p-value is .682408. The result is not significant at p < .05.

therefore ,the wtwo lab test are not satistically different.

q2.

0.013

The f-ratio value is 13.76366. The p-value is .020655. The result is significant at p < .05.

the two test are different statistically.

Treatments 1 2 3 4 5 Total N 3 3 6 X 1.9226 1.9177 3.8403 Mean 0.6409 0.6392 0.6401 X2 1.2321 1.2259 2.4581 Std.Dev. 0.001 0.0064 0.0042

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