C chego study Guided souti HM-Hwa Stat 302 S17 c secure https bassign.net/web/st
ID: 3181844 • Letter: C
Question
C chego study Guided souti HM-Hwa Stat 302 S17 c secure https bassign.net/web/student/Assignment-Responses/submit?dep 15965276 i Apps BHowdy o the Hus Transport.. Fist state The first 3 statements are correct. None of the above is correct. 14 points I Prvous Answers 13 to 17:56 acknowledged having smoked in the past week. A 2004 Gallup survey interviewed a nationally representative random sample of 500 teenagers aged (a) What parameter are we interested in? n, the number of toonagers in the sample n, the number of people who smoke interview o p, the proportion of teenagers aged 13 to 17 who acknowledge having smoked in the week before their p, the proportion of the US. population who are aged 13 to 17 (b)Give the numerical value of the point estimate for this parameter. (Use 3 decimal places) (c) Calculate a 95% confidence interval for the parameter. (Use 3 decimal places)Explanation / Answer
1.
a.
The param we are intereseted in is the proportion of teenagers aged 13 to 17 who
have smoked in past week
So, the answer is C.
b. This is given by: pcap = 56/500 = .112
c. 95% CI is given by :
pcap +/- Z*sqrt(p*p'/n)
=.112 +/- 1.96*sqrt(.112*.888/500)
=.0843 to .1396
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.