Use a technology tool to construct a 99% confidence interval for the population
ID: 3220157 • Letter: U
Question
Use a technology tool to construct a 99% confidence interval for the population mean. Interpret your answer. The table below is a random sample of the closing stock prices for a company for a recent year.
18.38, 16.93, 16.83, 17.74, 15.58, 15.60, 18.04, 19.16, 19.84, 18.27,
18.68, 20.71, 20.66, 21.09, 21.79, 22.16, 21.96, 22.19, 22.83, 20.83,
20.74, 22.11, 21.44, 22.33, 22.80, 24.33, 17.95, 14.44,
19.11, 18.44, 20.84, 21.45, 21.91, 21.85
(A) The 99% confidence interval for the population mean is:
(Round to two decimal places as needed.)
Explanation / Answer
The statistical software output for this problem is:
One sample T confidence interval:
: Mean of variable
99% confidence interval results:
Hence,
99% CI will be:
(18.85, 21.10)
Variable Sample Mean Std. Err. DF L. Limit U. Limit var30 19.970882 0.41153821 33 18.846035 21.09573Related Questions
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