Listed below are the ?mounts of net worth in milions o collars o distributed pop

Question

Listed below are the ?mounts of net worth in milions o collars o distributed populstion as requir he ten wealthiest celebrites in ? country. Construct a 95% confidence interval. What does the result tell us ?bout the population of a celebrities? Do th data appear to be rom ? normal y 266 213 193 172 166 155 145 145 145 140 What is the confidence interval estimate of the population mean ?? millionllion Round to one decimal place as needed What does the resut tell us about the population of all celebrities Selec the correct choice below and, if necessery fill in the answer boxies)to complete your choice A. We are confident that 95% or all celebrities have a net worth between $ millon and $ million. Round to one decimal place as needed.) We arc 95% confident that the inter al trom s Round to one decimal place as needed.) B million to $ million actually contains the truc mean net worth of a l celobrties O c. Recause the ten wathiest celebrities are not a representative sample, this doesnt prowide any intormation about the population of all celehrities Do the data appear to be from a normally distributed population as required? O A. Ycs, but the points in the normal quantile plot do not lic reasonably closc to a straight line or show a systematic pattern that is a straignt line pattern B. ? ?. O D. No, but the points in the normal quantile plot lie reasonably close to straight line and show some systematic pattern that is a straight line pattern. No, because the points le reasonable dose to a straight line, but there is a systematic pattern that is not a straght line pattern Yes, because the pattern ot the points in the normal quantile plot is reasonably close to a stra ght line

Explanation / Answer

Solution:- Given that sample 266,213,193,172,166,155,145,145,145,140

x = 174, s = 40.0749, n = 10, df = 9 , t = 2.262

=> The confidence interval estimate of the population mean = X +/- t*s/sqrt(n)
= 174 +/- 2.262*40.0749/sqrt(10)
= 145.3341 , 202.6659
= 145.3 , 202.7

=> option B. we are 95% confidence that the interval from $145.3 million to $202.7 million actually contains the true mean net worth of all celebrities.

=> option A.

Related Questions

Navigate

• Browse (All)
• Browse L
• Subjects

---

---

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