Question

In: Statistics and Probability

A researcher is interested in studying whether a new stretching technique affects the time needed to...

A researcher is interested in studying whether a new stretching technique affects the time needed to complete a certain running exercise. The times of 4 randomly selected participants were measured before the new stretching technique was used, and then the times for the same participants were measures after the new technique was used. The resulting data is

before new technique	58	70	61	63
after new technique	65	53	58	52

Is there a significant difference between the mean times with and without the new stretching technique?

1) What are the appropriate competing hypotheses?

2) What is the value of the test statistics?

3) What are the appropriate degrees of freedom?

4) What id the rejection region

5) p-value

6) test decision

Expert Solution

Answer:-

From the above information

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Thanks dear student.

orchestra answered 1 year ago

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