Chemistry

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CHEM2411_Term Test 1 Rapid Fire

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14 questions

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  • 1. Multiple Choice
    45 seconds
    1 pt

    Select all choices that represent ppm.

  • 2. Multiple Choice
    45 seconds
    1 pt

    The concentration of chromium in blood serum of a control and a diseased group were measured. Which of the following equation would you use to evaluate if the results of the two groups were statistically different or same?

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    None of the choices.

  • 3. Fill in the Blank
    45 seconds
    1 pt
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    Analysis for a sample was done in triplicate. To compare if the determined concentration is statistically the same or different at the 95% confidence interval, what value of tcrit should be used?

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