number 2 please, with clear solutions so that i can understand

Umihivox-John Abbott College Previous Problem A. No B. Yes Entered 5.8636119 B 1.87 3.93 Problem List gauss.vaniercollege.qc.ca Next Problem Omnivox-La, the Omnivox Classroom Answer Preview Note: You can earn partial credit on this problem. 5.8636119 B 1.87 3.93 2. Construct a 96% confidence interval estimate of the difference and 2 is the mean age of faculty cars. 1.866 3.934 G When one changes the significance les Result correct correct At least one of the answers above is NOT correct. Randomly selected 150 student cars have ages with a mean of 7.9 years and a standard deviation of 3.4 years, while randomly selected 65 faculty cars have ages with a mean of 5 years and a standard deviation of 3.3 years. 1. Use a 0.04 significance level to test the claim that student cars are older than faculty cars. The test statistic is 5.8636119 Is there sufficient evidence to support the claim that student cars are older than faculty cars? incorrect incorrect #42, where is the mean age of student cars