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Identify the critical t. An independent random sample is selected from an approximately normal population with...

Identify the critical t. An independent random sample is selected from an approximately normal population with unknown standard deviation find the degrees of freedom and the critical t value (t*) for the given sample size and confidence level.

n=6,CL=90%

N=21, CL=98%

n=29, CL= 95%

n=12,CL=99%

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