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?
260 |
198 |
196 |
167 |
162 |
158 |
157 |
157 |
152 |
152 |
What is the confidence interval estimate of the population mean
μ?
$nothing
million<μ<$nothing
million
(Round to one decimal place as needed.)
using excel>addin>phstat>confidence interval
we have
Confidence Interval Estimate for the Mean | |
Data | |
Sample Standard Deviation | 34.9646647 |
Sample Mean | 178.5555556 |
Sample Size | 9 |
Confidence Level | 90% |
Intermediate Calculations | |
Standard Error of the Mean | 11.65488823 |
Degrees of Freedom | 8 |
t Value | 1.8595 |
Interval Half Width | 21.6728 |
Confidence Interval | |
Interval Lower Limit | 156.88 |
Interval Upper Limit | 200.23 |
the confidence interval estimate of the population mean
is 156.9<
<200.2
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