Preterm infants with late metabolic acidosis (n=55) were compared to preterm infants without the condition (n=70) with respect to the level of a certain chemical in their urine. The infants with the condition had a mean level of 8.9 with a standard deviation of 4.3, while infants without the condition had a mean level of 5.0 with a standard deviation of 3.8. Construct a two-sided 95% confidence interval for the difference between the two means.Assume equal variances.1. The value for t and how you found it, 2. The calculation of the pooled variance, 3. The calculation of the Standard Error, 4. The calculation of the Margin of Error, 5. The calculation of the upper and lower limits, and 6. An interpretation of the confidence interval.

I am struggling with this. I kinda understand but i want to make sure. Can you show me the steps to do each question please, and thank you.