What I am looking for on the below answer is a unique thought, I have done my research and seen other answers on other sources and on this website, I am looking for something unique. Please do not just copy from someone else's work because I will google the answer you give me. If you use resources please share as that will help me analyze better.

Are t-tests or Z-tests used more often in business research? Why?

A manufacturer of disposable washcloths/wipes told a retailer that sales for this product category closely correlated with sales of disposable diapers. The retailer thought he would check this out for his own sales-forecasting purposes. The researcher says, "Disposable washcloths/wipes sales can be predicted with knowledge of disposable diaper sales." Is this the right thing to say?