Given that P(t > 1.8) + P(t < -1.8) with 9 df, approximate the p-value. Round your answer to 4 decimal places.

Approximate the p-value for the t statistic in a left-tailed test with t = 2.15 and 20 df. Round your answer to 4 decimal places.

Given the right-tail area of 0.025 and 20 degrees of freedom, find the critical value of t that specifies the rejection region. (Round your answer to 4 decimal places.)