Mathematics, 31.03.2020 03:06 ethannila
A) Determine the critical value(s) for a right-tailed test of a population mean at the a =0.10 level of significance with 15 degrees of freedom
b) Determine the critical value(s) for a left-tailed test of a population mean at the a=0.10 level of significance based on a sample size of n=10
c)Determine the critical value(s) for a two-tailed test of a population mean at the a=0.01 level of significance based on a sample size of n=13
Answers: 2
and we are conducting a right tailed test, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=T.INV(1-0.1,14)".And we see that 
and we are conducting a two tailed test, the value of 
, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.005,12)".And we see that 
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