Question: a. z a / 2 for the 99% confidence interval b. z a / 2 for the 98% confidence interval c. z a / 2

a. z a / 2 for the 99% confidence interval
b. z a / 2 for the 98% confidence interval
c. z a / 2 for the 95% confidence interval
d. z a / 2 for the 90% confidence interval
e. z a / 2 for the 94% confidence interval

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