A researcher would like to conduct a hypothesis test to determine if the mean age of faculty cars is less than the mean age of student cars. A random sample of 25 student cars had a sample mean age of 7 years with a sample variance of 20, and a random sample of 32 faculty cars had a sample mean age of 5.8 years with a sample variances of 16. What is the critical value of the rejection region if the difference is taken as student - faculty and the test is conducted using a 5% significance level? Your answer must match the value from the tables on D2L. A Question 4 (1 point) Retake question A researcher would like to conduct a hypothesis test to determine if the mean age of faculty cars is less than the mean age of student cars. What would the conclusion be if he calculates a test statistic value of 3.47 and uses a critical value of 2.086