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# Construct a 90% confidence interval for the population standard deviation o at Bank A. Bank A 4.2 5.4 5.9 6.1 6.6 7.7 7.7 8.6 9.3

Construct a 90% confidence interval for the population standard deviation o at Bank A.

Bank A

4.2

5.4

5.9

6.1

6.6

7.7

7.7

8.6

9.3

10.0

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