Consider the following results for two samples randomly taken from two normal populations with equal variances. 
a.Develop a 95% confidence interval for the difference between the two population means.
b.Is there conclusive evidence that one population has a larger mean? Explain.
Definitions:
Nonverbal Cues
Consist of all the ways in which people communicate without words, including gestures, facial expressions, and body language.
Demographics
Statistical data relating to the population and particular groups within it, often used for marketing and planning purposes.
Emotions
Emotions are complex psychological states involving an individual's subjective experience, physiological response, and behavioral or expressive reaction.
Proximity
The physical closeness between people or things, influencing interactions and relationships.
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