led a 30 students who population information for first term college students. the Z-Test of the sample mean. Parameters/ Statistics Population Mean (u) 2.5 Population Standard Deviation (a) 0.8 Sample mean (X) Sample Size (n) 27 - 2.5 D. 8 N 302.7? PROBABILITY OF THE SAMPLE MEAN IS H 1- 0- 9 8.53>2.7 6. If I decrease my alpha-level form 0.1 to .001, which decision error am I less likely to commit and which one am I more likely to commit? And how do you know this? 7. With data from Question 1, compute the 95% confidence internal and 99% Confidence internal for the sample mean