This is an upper tail test, so we are only concerned about the critical value that gives an area of 0.05 in the upper tail. Any test statistic greater than or equal to this critical value will result in the null hypothesis being rejected. We previously determined that this test will use 13 degrees of freedom. Use technology to find the value of
2
that corresponds to an upper tail area of 0.05, rounding the result to three decimal places.
2 =