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 for the given sample size and confidence level. (a) n = 6, CL = 90% (b) n = 21, CL = 98% (c) n = 29, CL = 95% (d) n = 12, CL = 99%
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Home » Mathematics » 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 for the given sample size and confidence level.