I would really appreciate some immediate assistance with the following... An actual break down explanation with precise HOW TO would be great.

#8. For HA: 0.25 at alpha =0.10, what is the upper critical value of the test statistic?

My questions.... 1. Why are we using ? We already know that 0.25 as it actually equals 3.14.2.The upper critical value of what, exactly? How do I find the upper critical value of a test statistic with such little information?

#9. For HA: > 0.50 at alpha 0.05, what is the critical value of the test statistic?

My questions.... All the same as #8 AND.... Why is the answer for #8 and #9 the same?????(1.645)