if False provide the correct response ,1 explanation. 1. As the alpha level increases, the values of the z scores required to reject Ho decrease. T F 2. When using one-tail analysis we protect ourselves from Type 1 error. T F 3. By increasing the sample size, we decrease the power of the analysis. T F 4. Correlations allow inferring the casual relations between predictor and criterion variables. T F 5. When carrying out correlational analysis we want to assure low variability in the data. T F