A marketing researcher would like to determine if the attitude of a sales team member plays

a role in determining the time spent in a store by a consumer. The researchers breaks up

all of their consumers into two groups: Group A consumers will encounter a friendly sales

team member in the store, Group B consumers will encounter an angry sales team member

in the store. The two groups are the same proportionally with the exception of gender (and

obviously sales team member attitude): Group A contains 40% of males and 60% of females

while Group B contains 55% males and 45% females. The consumers are sent into the store

and data is recorded as to how long each one spends in the store. Which of the following

best describes the method of analysis of the data the researcher should take?

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