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To test the effect of a physical fitness course on ones

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To test the effect of a physical fitness course on one's physical ability, the number of sit-ups that a person could do in 1 minute, both before and after the course, was recorded. Ten randomly selected participants scored as shown in the following table. Can you conclude that a significant amount of improvement took place? Use ? = 0.01 and assume normality.

 

Before 14 15 13 13 11 15 17 17 15 15
After 18 22 13 23 17 18 20 25 22 16

(a) Find t. (Give your answer correct to two decimal places.)

Reference no: EM13609001

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