ation for first term college students. Gi the Z-Test of the sample mean. Parameters/ Statistics Population Mean (H) 2.5 Population Standard Deviation (o) 0.8 Sample mean (X) 2.7 Sample Size (n) 2. For the z-test in question 1, let's assume your alternativof the z-test in question 1, let's assume your alternative hypothesis is nondirectional (H,) u = 2.5 and your alpha (level of significance) was set at .01. What is your critical value? (Hint: Two- tailed) Should you reject or retain the null hypothesis? Explain why? 5. For the z-test in question 1, what is the probability of the sample mean as high or higher than 2.7? 6. If I decrease my alpha-level form 0.1 to .001, which decision error am | less likely to commit and which one am I more likely to commit? And how do you know this