-10.1 points Devorestar9 9.E 011 My Notes Ask Your The level of lead in the bloo

Question

-10.1 points Devorestar9 9.E 011 My Notes Ask Your The level of lead in the blood was determined for a sample of 152 male hazardous-waste workers age 20-30 and also for a sample of 86 female warkers, resulting in a mean t standard error of 5.2 0.3 for the men and 3.6 0.2 for the women calculate an estimate of the difference between true average blood lead evels for male and female workers n a way that rou des information about re ia t and precision use a 95% confidence inter a Round your answers to two decimal places.) Interpret the interval we are 95% confident that the true average blood lead level for male workers is greater than that of female workers by an amount within the confidence interval. we cannot draw a conclusion from the given information. we are 95% confident that the true average blood lead level for male workers is less than that of female workers by an amount within the confidence interval. we are 95% confident that the true averag blood cad eve for male workers is greater than that of femalc wcr ers by an amaunt outside the confidence interval. You may need to use the appropriate table in the Appendix of Tables to answer this questian. Need Help?edTalk to & Tutor

Explanation / Answer

Solution:- 95% confidence interval for Z is 1.96.

=> x-bar - y-bar ± z(/2)*sqrt((s1^2/m) + (s2^2/n))

=> (5.2-3.6-1.96*sqrt(0.3^2+0.2^2), 5.2-3.6+1.96*sqrt(0.3^2+0.2^2) )

= (0.89 , 2.31)

=> option a. we are 95% confident that average blood level for male worker is greater than that of female worker by an amount within confidence interval .

Related Questions

Navigate

• Browse (All)
• Browse #
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.