Solve the Problem $\mathrm { F }$ Value Is Denoted $\mathrm { F } _ { \mathrm { R } }$

question 26

Multiple Choice

Solve the problem.
-When performing a hypothesis test for the ratio of two population variances, the upper critical $\mathrm { F }$ value is denoted $\mathrm { F } _ { \mathrm { R } }$ . The lower critical $\mathrm { F }$ value, $\mathrm { F } _ { \mathrm { L } }$ , can be found as follows: interchange the degrees of freedom, and then take the reciprocal of the resulting $\mathrm { F }$ value found in table $\mathrm { A } - 5$ . $\mathrm { F } _ { \mathrm { R } }$ can be denoted $\mathrm { F } _ { \alpha / 2 }$ and $\mathrm { F } _ { \mathrm { L } }$ can be denoted $\mathrm { F } _ { 1 - \alpha / 2 }$
Find the critical values $\mathrm { F } _ { \mathrm { L } }$ and $\mathrm { F } _ { \mathrm { R } }$ for a two-tailed hypothesis test based on the following values:
$$n _ { 1 } = 4 , n _ { 2 } = 8 , \alpha = 0.05$$

• A) \(0.1703,5.8898\)
• B) \(0.1112,5.0453\)
• C) \(0.0684,5.8898\)
• D) \(0.1211,4.3541\)

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