Homework: practice problems-module 13 Score: 0 of 1 pt 7.4.5-T MN Score: 0%, 0 o

Question

Homework: practice problems-module 13 Score: 0 of 1 pt 7.4.5-T MN Score: 0%, 0 of 3 pts Question Help Use the given information to find the number of degrees of treedom, the eritical values ? and k, and the confidence interval estimate of o Iis reasonable to assume that a simple random sample has been selected trom a population with a normal distribution Nicotine in merthol eigarenes 90% confidence . 28, s.0.21 mg. A/ack the centowwthe table of CwSquare crtcal values ??(Type a whole number) Area to the right of the critical vaue Enter your answer in

Explanation / Answer

solution:-
given that n = 28 ,s = 0.21
df = n -1 = 28 - 1 = 27
critical values
X^2 L = 16.15
X^2 R = 40.11

confidence for standard deviation formula
=> sqrt(((n-1)*s^2)/x^2 R) < ? < sqrt(((n-1)*s^2)/x^2 L)
=> sqrt(((27*0.0441/40.11) < ? < sqrt(((27*0.0441/16.15)
=> 0.1723 < ? < 0.2715 (rounded four decimal places)

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

---

---

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