Question: A researcher convinced a restaurant to experiment with two different kinds of music. One was faster upbeat music and the second was soft relaxing music.

A researcher convinced a restaurant to experiment with two different kinds of music. One was faster upbeat music and the second was soft relaxing music. A random sample of diners was drawn and the type of music, the amount of time spent in the restaurant, and the amount spent on drinks were recorded. Is there sufficient evidence to conclude that when the soft relaxing music was played diners spent more time in the restaurant and spent more money on drinks?

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