Can someone please help me understand how to answer these questions? No one has been replying to me. The lab data is pictured in continuation so where the shorter picture starts is where the other ended exactly.

\f\fCalculate a 95% confidence interval for the mean mileage of make 2. Use the method for single means when a is not known, but use the Error Mean Square as the estimate of the variance. The degrees of freedom will be the Error DF, not nl! Reminders: Confidence Interval - moon & margin of error Margin of error - critical value * standard error Use critical value for T at o/2 - 0.025 and of - error of (t table or EXCEL T.INV function) Use standard error - v(error mean squareumber of observations of that make of car) 10. What was the margin of error for the confidence interval for gasoline mileage of make 2? 11. What was the lower 95% confidence limit for make 2 mileage? 12. What was the upper 95% confidence limit for make 2 mileage? {Example 24} " Conduct a test of hypothesis that the mean mileage of makes 2 and 3 do not differ. Use the method for single means when a is not known with the Error MS serving as the pooled variance. Reminders: Test statistic t - difference of means / standard error of difference of means. The standard error of the difference equals square root of the sum of variances of the two means. The variance of each mean is estimated by the error mean square number of observations in that mean. 13. What is the value of the t test statistic for testing the hypothesis that makes 2 and 3 do not differ in mileage? (Example 24)