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?
268 211 186 171 169 156 147 147 147 142
What is the confidence interval estimate of the population mean μ?
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. Because the ten wealthiest celebrities are not a representative sample, this doesn't provide any information about the population of all celebrities.
B. We are 90% confident that the interval from S million to $ million actually contains the true mean net worth of all celebrities. (Round to one decimal place as needed.)
C. We are confident that 90% of all celebrities have a net worth between $ million and $ million (Round to one decimal place as needed.)
Do the data appear to be from a normally distributed population as required?
A. 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
First we need to find the mean and s.d of the given data
Mean = 174.4
N = 10
S.d = 39.3226
As the population s.d is unknown here we need to use t distribution
Degrees of freedom is = n-1 = 9
For df 9 and 90% confidence level critical value t from t table is = 1.83
Margin of error (MOE) = t*s.d/√n = 1.93*39.3226/√10 = 22.795
Confidence interval is given by
(Mean - MOE, Mean + MOE)
[151.605, 197.195]
Listed below are the amounts of net worth (in millions of dollars) of the ten wealthiest celebrities in a country
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? 268 211 186 171 169 156 147 147 147 142 What is the confidence interval estimate of the population mean μ? What does the result tell us about the population of all celebrities? Select...
Listed below are the amounts of net worth (in millions of dollars) of the ten wealthiest celebrities in a country. Construct a 99% 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? 256 216 196 174 156 150 145 145 145 140 What is the confidence interval estimate of the population mean μ? $_____ million < μ < $_____ (Round to one...
Listed below are the amounts of net worth (in millions of dollars) of the ten wealthiest celebrities in a country. Construct a 95% 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? 254 204 186 161 160 156 154 154 154 149 What is the confidence interval estimate of the population mean mu? $ nothing millionless thanmuless than$ nothing million (Round to...
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? 268 211 186 171 169 156 147 147 147 142 What is the confidence interval estimate of the population mean u? million < <$ million (Round to one decimal place...
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? 243 218 176 172 162 155 147 147 147 142 What is the confidence interval estimate of the population mean μ? $___million < μ < $___ million
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? 244 199 194 168 155 151 R 145 145 145 140 What is the confidence interval estimate of the population mean μ?
Listed below are the amounts of net worth (in millions of dollars of the ten wealthiest celebrities in a country. Construct a 95% 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? 260 206 199 156 155 153 147 147 147 147 What is the confidence interval estimate of the population mean μ?
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? 241 203 195 170 168 165 149 149 149 149 n What is the confidence interval estimate of the population mean u? $ million < μ <$ million (Round to...
Listed below are the amounts of net worth (in Millions of dollars) of the ten wealthiest celebrities in a country. Construct a 95% 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? 269 214 194 168 166 161 146 146 146 146 What is the confidence interval estimate of the population mean u? million <<$ million (Round to one decimal place as...
Listed below are the amounts of net worth (in millions of dollars) of the ten wealthiest celebrities in a country. Construct a 99% 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? 266 192 190 167 159 154 154 154 152 149 What is the confidence interval estimate of the population mean muμ? $nothing millionless than<muμless than<$nothing million (Round to one decimal...