How can i apply this to spss or pspp i know how to do it by hand i want to know how it is done in the software please and if possible can you please send me a screenshot of the work so I can understand more.. thank you for your time

A simple random sample of birth weights in the United States has a mean of 3444 g. The standard deviation of all birth weights is 495 g. a) Using a sample size of 75, construct a 95% confidence interval estimate of the mean birth weight in the United States. b) Using a sample size of 75,000 construct a 95% confidence interval estimate of the mean birth weight in the United States. c) Which of the proceeding intervals is wider? Why