91Ó°ÊÓ

Use the information given in Exercises \(2-7\) to find the tabled value for an \(F\) variable based on \(n_{1}-\) I numerator degrees of freedom, \(n_{2}-1\) denominator degrees of freedom with an area of a to its right. \(n_{1}=3, n_{2}=8, a=.050\)

Calculate the number of degrees of freedom for a paired-difference test in Exercises \(2-4,\)with \(n_{1}=n_{2}=\) number of observations in each sample and \(n=\) number of pairs. $$n=12$$

Find the tabled value of \(t\left(t_{a}\right)\) corresponding to a right-tail area a and degrees of freedom given. $$ a=.01, d f=18 $$

Use the information given in Exercises \(2-7\) to find the tabled value for an \(F\) variable based on \(n_{1}-\) I numerator degrees of freedom, \(n_{2}-1\) denominator degrees of freedom with an area of a to its right. \(n_{1}=7, n_{2}=5, a=.010\)

Find the tabled value for \(a \chi^{2}\) variable based on \(n-1\) degrees of freedom with an area of a to its right. \(n=41, a=.025\)

Find the critical value(s) of t that specify the rejection region for the situations $$\text { A right-tailed test with } \alpha=.05 \text { and } 16 d f$$

Calculate the number of degrees of freedom for \(s^{2}\), the pooled estimator of \(\sigma^{2}\). $$ n_{1}=10, n_{2}=12 $$

Calculate the number of degrees of freedom for \(s^{2}\), the pooled estimator of \(\sigma^{2}\). $$ n_{1}=15, \quad n_{2}=3 $$

Find the critical value(s) of t that specify the rejection region for the situations $$\text { A two-tailed test with } \alpha=.05 \text { and } 25 \mathrm{df}$$

Use the information given in Exercises \(2-7\) to find the tabled value for an \(F\) variable based on \(n_{1}-\) I numerator degrees of freedom, \(n_{2}-1\) denominator degrees of freedom with an area of a to its right. \(n_{1}=13, n_{2}=14, a=.100\)