What is the % contribution to total lead intake for individuals in the 3rd quartile of exposure for the smallest contributing pathway overall, as indicated by our simulation? Express your answer as a percentage, rounding to the nearest hundredth of a percent.

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BlackTom AI · Accepted Answer

Here is how to think through the problem and the given answers step by step.
First, identify what the question is asking: it wants the percentage contribution to total lead intake for individuals in the 3rd quartile of exposure for the smallest contributing pathway overall, as indicated by the simulation, and to express it as a percentage rounded to the nearest hundredth of a percent.
Next, examine the two numerical representations provided as possible answers: 9.01 and 0.0901.
- Option/value 9.01: This is a percentage value expressed in percent units. If the simulation result is 9.01%, that directly matches the question's request to express as a percentage rounded to two decimal places.
- Option/value 0.0901: This is the decimal representation of the same proportion. Converting a decimal proportion to a percentage involves multiplying by 100. So 0.0901 × 100 = 9.01%. While this is not presented as a percentage, it represents the same amount in decimal form.
Now, considering the instruction to express the answer as a percentage, the appropriate form to report is 9.01% (i.e., 9.01 as a percent value).
If a student were to input 0.0901, some systems would automatically convert it to 9.01% or flag it as a different unit, so understanding the conversion helps avoid confusion.
In terms of potential pitfalls:
- Do not misplace the decimal; 0.0901 is not 0.901% but 9.01% when converted to a percentage.
- Ensure rounding is applied to the nearest hundredth of a percent; in this case, 9.01% is already at two decimal places, so no further rounding is needed.
- If the question demanded a decimal fraction instead of a percentage, you would report 0.0901; since it asks for a percentage, report 9.01%.
Overall conclusion (in practical terms): the correct percentage representation is 9.01% (which is numerically equivalent to the decimal 0.0901).

EH 206 Homework 2

What is the % contribution to total lead intake for individuals in the 3rd quartile of exposure for the smallest contributing pathway overall, as indicated by our simulation? Express your answer as a percentage, rounding to the nearest hundredth of a percent.

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