A random sample of 80 companies who announced corrections to their balance sheets took a mean time of 8.1 days for the time between balance sheet construction and the complete audit. The population standard deviation is assumed to be 1.3 days. What is the critical value for α = .001 to apply the critical value rule for the claim that μ is greater than 7.5 days?

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The Answer of A random sample of 80 companies who announced corrections to their balance sheets took a mean time of 8.1 days for the time between balance sheet construction and the complete audit. The population standard deviation is assumed to be 1.3 days. What is the critical value for α = .001 to apply the critical value rule for the claim that μ is greater than 7.5 days?

A Random Sample of 80 Companies Who Announced Corrections to Their