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    Confidence Intervals, Cancer Potency, Cancer Risk

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    7. Using the upper 95% confidence level for the 20 mg/kg-day dose, calculate the cancer potency by drawing a straight line from the 20 mg/kg-day dose level to the origin.

    8. Do the same using the lower 95% confidence level.

    9. Calculate the range of doses that would correspond to a one in a million risk (p = 1E-6) using your answers to Questions 7 and 8.

    10. What conclusions do you draw from your answer?

    11. If you were the EPA administrator, would you ban Kil-EZ to avoid human cancers? Explain your answer.

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    https://brainmass.com/statistics/confidence-interval/confidence-intervals-cancer-potency-cancer-risk-145932

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    7. Using the upper 95% confidence level for the 20 mg/kg-day dose, calculate the cancer potency by drawing a straight line from the 20 mg/kg-day dose level to the origin.

    8. Do the same using the lower 95% confidence level.

    I pasted the chart below. Draw lines from the points above the 20 mg dose to the origin.

    To find the cancer potency, calculate the slopes of those lines:

    lower level of CI for 20 mg dose:

    slope = (0.0168 - 0)(20 mg/kg/day - 0) = 0.00084 kg-day/mg

    upper level of CI for 20 mg doseL

    slope = (0.1832 - 0)(20 mg/kg/day - 0) = 0.00916 kg-day/mg

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    Let's do the same calculations as in questions 7 and 8 but for the other doses:

    Rat test dose in mg Kil-EZ per kg rat body weight ...

    $2.19