What is the z-score multiplier to make a 2-sided 95% confidence interval? (this is the value you look up in the standard normal table - enter your answer with 2 decimal places)?
What is the z-score multiplier used to make a 1-sided 95% confidence interval? (this is the value you look up in the standard normal table - enter your answer with 2 decimal places)?
= 1 - 0.95 = 0.05
For Two tailed test,
Z/2 = Z0.05/2 = Z0.025 = 1.96
= 1 - 0.95 = 0.05
For one tailed test,
Z = Z0.05 = 1.64
What is the z-score multiplier to make a 2-sided 95% confidence interval? (this is the value...
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