The Cranston Hardware Company is interested in estimating the difference in the mean purchase for men customers versus women customers.It wishes to estimate this difference using a 95 percent confidence level.Assume that the variances are equal and the populations normally distributed.The following data represent independent samples from each population: 
Based on these data,the upper limit of the interval estimate is approximately $13.82.
Definitions:
Mediation Analysis
A statistical approach used to explore and model the process through which a predictor variable influences an outcome variable via one or more intermediary variables.
Shadow Negotiation
The often unspoken and strategic aspect of negotiation that involves the management of power, perception, and conflict.
Negotiators
Individuals or parties involved in discussion or dialogue to reach an agreement or resolve a dispute.
Boundaries
Boundaries are the limits or borders that individuals or groups establish to protect their well-being, define their space, or clarify roles and responsibilities in relationships.
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