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The three most commonly used confidence levels are 99%, 95% and 90%. Each of these confidence levels has a specific z-values that are used when

The three most commonly used confidence levels are 99%, 95% and 90%. Each of these confidence levels has a specific z-values that are used when calculating the margin of error. State the z-value for each confidence level. 99% confident: z = 95% confident: z = 90% confident : z = I (Answers should be rounded to two decimal places)

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