With the below question, I believe that I am required to do a Hypothesis Test. However, I am unsure how to conduct this in order to answer the below question properly. Could you please help on how to do this hypothesis test? The n = 191. Specifically, I am really unsure what the null hypothesis and alternative hypothesis is.

"Based on casual observation, my sense is that out biggest shopper segment is established adults above 40 with a significant amount of annual disposable income (i.e. with disposable incomes between $80,001 and $100,000 per year). Can you establish whether this conjecture is true?"