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Assume 15% of small business filed for bankruptcy in state A in 2021. In a sample of 81 businesses from state A, 12 of them

Assume 15% of small business filed for bankruptcy in state A in 2021. In a sample of 81 businesses from state A, 12 of them filed for bankruptcy in 2022. Answer the following question.

a) Is the percentage of businesses filed for bankruptcy in 2022 equal to that of 2021?

b) Is the percentage of businesses filed for bankruptcy in 2022 equal to that of 2021 at 0.1 significance level (alpha)?

c) Is the percentage of businesses filed for bankruptcy in 2022 less than that of 2021?

d) Is the percentage of businesses filed for bankruptcy in 2022 less than that of 2021 at 0.01 significance level?

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