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Question
IF the population standard deviation is not known then the formula used to calculate standard error is as
Options:
A .  n - 1 ⁄ sample size square root
B .  s ⁄ sample size square root
C .  n + 1 ⁄ square root of s
D .  n * 2 ⁄ sample size square root
Answer: Option B
Answer: (b).s ⁄ sample size square root

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