The following values are drawn from a normal population. (You may find it useful to reference the
appropriate table: chi-square table or F table)
22
35
32
25
27 29
21
27
Click here for the Excel Data File
a. Calculate the point estimates for the population variance and the population standard deviation. (Round
your answers to 4 decimal places.)
Point Estimates
Population variance
Population standard deviation
-
...
.
b. Construct the 90% confidence interval for the population variance and the population standard deviation
(Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.)
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