Does the amount of hazardous material absorbed by the bodies of hazardous waste

Question

Does the amount of hazardous material absorbed by the bodies of hazardous waste workers depend ongender? The level of lead in the blood was determined for a sample of men and a sample of womenwho dispose of hazardous waste as a full time job. You want to test the hypotheses that the amountabsorbed by men is di erent from the amount absorbed by women. After performing a two sampletest, you see a p-value of 0.0459. Of the following, which is the appropriate conclusion?

a) The average amount of lead absorbed by men is signi cantly di erent from the average amount

of lead absorbed by women.

(b) The average amount of lead absorbed by men is equal to the average amount of lead absorbed by

women.

(c) The average amount of lead absorbed by men is signi cantly less than the average amount of leadabsorbed by women.

(d) The average amount of lead absorbed by men is signi cantly greater than the average amount of lead absorbed by women.

(e) We did not nd enough evidence to say a signi cant di erence exists between the average amount

of lead absorbed by men and the average amount of lead absorbed by women.

Explanation / Answer

e) We did not nd enough evidence to say a signi cant di erence exists between the average amount

of lead absorbed by men and the average amount of lead absorbed by women.

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