Coaching and SAT scores Lets first ask if students who are coached increased their scores significantly. (a)

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Coaching and SAT scores Let’s first ask if students who are coached increased their scores significantly.

(a) You could use the information on the Coached line to carry out either a two-sample t test comparing Try 1 with Try 2 for coached students or a paired t test using Gain. Which is the correct test? Why?

(b) Carry out the proper test. What do you conclude?

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