This is my first time posting. I'm working on a statistics problem that I'm having difficulty understanding. Here is the problem:
The Praxis II test was given to a sample of 1573 prospective teachers. The mean of these scores was 1053 and the standard deviation was 92.
a.) Give a 95% confidence interval (μ ± 2ơ) for the mean (average) score in the population of all young women.
b.) Suppose that a sample of 300 prospective teachers had produced the same mean and standard deviation. Again, give the 95% confidence interval (μ ± 2ơ) for the mean (average) score in this case.
I have gone over and over but I'm not understanding something because it feels like information is missing based on what I have been doing. I appreciate any help with understanding the problem.