A sample of 8 siblings shows the mean age receiving their driver's license. younger: 16, 16, 17, 18, 16, 17, 18, 19 older: 17, 17, 16, 17, 17, 18, 17, 20 Test to determine if there is evidence at the 0.05 level of significance to suggest that ages of receiving a driver's license is earlier for younger siblings. State the test stat and pvalue rounded to the nearest thousandths place