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T-test independent that people can hear better after having eaten a large meal

A researcher theorized that people can hear better when they have just eaten a large meal. Six individuals were randomly assigned to eat either a large meal or a small meal. After eating the meal, their hearing was tested. The hearing ability scores (high numbers indicate greater ability) are given in the following table. Using the .05 level, do the results support the researcher's theory?

(a) Use the steps of hypothesis testing,
(b) sketch the distributions involved.

Big Meal Group Small Meal Group
Subject Hearing Subject Hearing
A 22 D 19
B 25 E 23
C 25 F 21


    I would have liked to know what the hearing scores of both groups was before eating.

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