Hello,
I have over five years of experience in statistics and inference is one of my strongest points, calculating statistics and their confidence interval, and hypothesis testing is something I find quite interesting because that is how you can convey data-driven ideas and projects.
I can see from your description that the task seems to be like a report for some assignment. You can get a thorough analysis of the sample, the measure of interest (proportion vs mean) and the statistic for hypothesis testing or building confidence interval. I could help you writing the report (if needed) and explain to you the process, the conclusions, the methods. etc...
I am proficient in excel and I am sure I can help you build a workbook that is easy to understand and which you can use for future task like this.
Looking forward to working with you,
Have a good night.
Felipe.