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help please with explanation It's your turn! Try these! 1. z = 2 ; 95% confidence ; two-tailed 2. z = -2.68 ; 95% confidence

help please with explanation

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It's your turn! Try these! 1. z = 2 ; 95% confidence ; two-tailed 2. z = -2.68 ; 95% confidence ; two-tailed 3. z = 1 , = 0.8 ; 95% confidence ; one-tailed 4. z = 1.33 ; 99% confidence ; one-tailed 5. z = -4.0 ; 99% confidence ; two-tailed

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