24. Milliez et al. (A-27) conducted a study involving high-risk pregnancies. A sample of 23 nulliparous women delivered babies whose mean weight was 2958 grams with a standard deviation of 620. The mean and standard deviation of the weights of babies born to a sample of 26 multiparous women were 3085 and 704, respectively. State the necessary assumptions about the samples and the populations about which the sample data may be used to make inferences and construct a 95 percent confidence interval for the difference between the mean birth weights for the two populations.