Question

This Question: 6 pts 12 of 15 (9 complete) This Quiz: 85 pts possible Question Help Use the given information to find the number of degrees of freedom, the critical values xz and xỉ, and the confidence interval estimate of o. It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. Nicotine in menthol cigarettes 90% confidence; n = 27. s = 0.26 mg. Click the icon to view the table of Chi-Square critical values. df = 26 (Type a whole number.) x2 = (Round to three decimal places as needed.) XR - (Round to three decimal places as needed.) mg o mg. The confidence interval estimate of ois (Round to two decimal places as needed.)

Answer 1

Answer in aiven that ma 27 S0.2 9 C=0.907 630.10 - Printer at : degrees of freedom Xn-1 = X = 26 at = 26. 1X = X unt,& *.0.70 17:292 A (from chi-square critical value table). 17.292 = X ogo = 35.963 (from chiqquare Snitiral valle table 15.502 3 df - 2012 Are 17.22 XR= 35.563)

Latah 1 Ligo%. Contidence interval hor estimate of o te le cose 0 Xit, the = X 26 pros = 38.885 1 X , on = X 2030. gs = 15.379 (0.264 / 2015 ROK 0.26X je to 3 (0.28% 0-8177 s os 0.26X 1.2002) (0.21585 0.34) The confidence interval estimate of or is T0.21 mg <o<10.34 mg