Question
In: Statistics and Probability
At Burnt Mesa Pueblo the method of tree ring dating gave the following dates A.D. for...
At Burnt Mesa Pueblo the method of tree ring dating gave the following dates A.D. for an archaeological excavation site: 1189 1271 1267 1272 1268 1316 1275 1317 1275
This sample has mean 1272.2 and standard deviation 36.93. Find a 90% confidence interval using these data and interpret the interval.
Solutions
Expert Solution
Solution :
sample size = n = 9
Degrees of freedom = df = n - 1 = 8
t
/2,df = 1.860
Margin of error = E = t/2,df
* (s /
= 1.860 * (36.93 /
Margin of error = E = 22.9
The 90% confidence interval estimate of the population mean is,
- E < 
<
+ E
1272.2 - 22.9 <
< 1272.2 + 22.9
1249.3 <
< 1295.1
The 90% confidence interval estimate of the population mean is from 1249.3 to 1295.1
orchestra answered 2 years agoRelated Solutions
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1299
1320
1268
1316
1275
1317
1275
(a) Use a calculator with mean and standard deviation keys to
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A.D.
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x =
Incorrect: Your answer is incorrect.
A.D.
s =
Incorrect: Your answer...
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