Question
The following table shows the annual returns (in percent) for CD rate from a local bank...
The following table shows the annual returns (in percent) for CD rate from a local bank in 2016 through 2020.
|
Year |
CD rate |
|
2016 |
2.55 |
|
2017 |
-1.75 |
|
2018 |
2.80 |
|
2019 |
4.25 |
|
2020 |
1.80 |
a. The point estimate of σ2 is ________
b. 95% confidence interval of σ2 is between________and________
(Keep the answer in 2 decimal places).
(no excel work)
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