تم الحل ✓
categoryإحصاء
schoolبكالوريوس
event_available2026-07-13
السؤال
Transcribed Image Text:
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?
255
200
182
175
160
What is the confidence interval estimate of the population mean μ?
$ million <µ<$ million
(Round to one decimal place as needed.)
153
146
146
141
141
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.
OA. We are 90% confident that the interval from $ million to $
(Round to one decimal place as needed.)
million actually contains the true mean net worth of all celebrities.
million and $ million.
OB. We are confident that 90% of all celebrities have a net worth between S
(Round to one decimal place as needed.)
OC. Because the ten wealthiest celebrities are not a representative sample, this doesn't provide any information about the population of all celebrities.
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. 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.
C. 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.
○ 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.
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