Listed below are the amounts of net worth​ (in millions of​ dollars) of the ten wealthiest celebrities in a country. Construct a 90​% confidence interval. What does the result tell us about the...




Listed below are the amounts of net worth​ (in millions of​ dollars) of the ten wealthiest celebrities in a country. Construct a
90​%

confidence interval. What does the result tell us about the population of all​ celebrities? Do the data appear to be from a normally distributed population as​ required?




















269


204


178


162


161


157


157


157


155


152














What is the confidence interval estimate of the population mean
μ​?




​$nothing

million<><>

million

​(Round to one decimal place as​ needed.)

What does the result tell us about the population of all​ celebrities? Select the correct choice below​and, if​ necessary, fill in the answer​ box(es) to complete your choice.







A.


We are confident that
90​%

of all celebrities have a net worth between
​$nothing

million and
​$nothing

million.

​(Round to one decimal place as​ needed.)






B.


Because the ten wealthiest celebrities are not a representative​ sample, this​ doesn't provide any information about the population of all celebrities.






C.


We are
90​%

confident that the interval from
​$nothing

million to
​$nothing

million actually contains the true mean net worth of all celebrities.

​(Round to one decimal place as​ needed.)





Do the data appear to be from a normally distributed population as​ required?







A.


​Yes, because the pattern of the points in the normal quantile plot is reasonably close to a straight line.






B.


​No, but the points in the normal quantile plot lie reasonably close to a straight line and show some systematic pattern that is a straight line pattern.






C.


​Yes, but the points in the normal quantile plot do not lie reasonably close to a straight line or show a systematic pattern that is a straight line pattern.






D.


​No, because the points lie reasonable close to a straight​ line, but there is a systematic pattern that is not a straight line pattern.






Jun 10, 2022
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