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1. Accountants at Taxes'R'Us sometimes make mistakes when completing tax returns for their clients. Th firm completes thousands of returns each year and are trying to determine what percentage of their returns contain mistakes. In a random sample of 150 returns it was found that 22 returns contained mistakes. a) (20pts) Test to see if the percentage of returns with errors is under 15%. H. : H1 : Sample data: Conditions: Test Statistic: Analyze Data: Distribution curve: p-value: Decision (circle one): Reject Ho Do NOT Reject Ho Interpretation of decision (write complete sentences in the context of the problem): b) (8pts) Suppose that the IRS will fine Taxes'R'Us substantially if 15% or more of their returns co errors. With this in mind, explain the consequences of the firm making a type I error in this sce