Question: Can you help me solve this pls ? What is z/t for an 85% confidence level when the sample size is 37 and o is

Can you help me solve this pls ? What is z/t

Can you help me solve this pls ?

for an 85% confidence level when the sample size is 37 and

What is z/t for an 85% confidence level when the sample size is 37 and o is known

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