Suppose you are testing the sample is small (n = 6) and the data come from a normal population. the variance, σ2, is unknown. (a) find the critical value(s) corresponding to α = 0.20. (b) you find that t = −1.71. based on your critical value, what decision do you make regarding the null hypothesis (i. e. do you reject h0 or do not reject h0)?