If, in a sample of n = 30 selected from a normal population, X = 56 and S = 12, what are the critical values of t if the level of significance, a, is 0.05, the null hypothesis, Ho, is = 50, and the alternative hypothesis, H, is #50? Click here to view page 1 of the critical values for the t Distribution. Click here to view page 2 of the critical values for the t Distribution. Part 1 of 2 0 of 1 Point The mean finish time for a yearly amateur auto race was 185.17 minutes with a standard deviation of 0.339 minute. The winning car, driven by Sam, finished in 184.23 minutes. The previous year's race had a mean finishing time of 112.3 with a standard deviation of 0.127 minute. The winning car that year, driven by Karla, finished in 111.92 minutes. Find their respective z-scores. Who had the more convincing victory? Sam had a finish time with a z-score of Karla had a finish time with a z-score of (Round to two decimal places as needed.) Help me solve this View an example Get more help Clear all Check answer The probability of a certain event, Event A, is equal to 0.4. Another event, Event B, has a 0.2 likelihood of occurring. If events A and B are mutually exclusive, what is the probability of the union of Events A and B?