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Question

[euLIou 1ou "nen-01-u ic.caicuiations on it. cuy u It Is nard to You must show all your work to receive credit. You may not use SPSS or Excel for any of the problems on this exam. *(10 points) A medical researcher is studying the effects of yoga exercise as a relaxation treatment. Specifically, she is looking at the effect of the exercise on resting heart rate of individuals. She takes a group of 10 volunteers and measures their resting heart rates. Then, she has them enroll in a three-times-a-week yoga class for eight weeks. At the end of this period, she measures their resting heart rate again. Does the yoga exercise lead to a decrease in resting heart rate? Assume the data are normal. Reading 1 (before) 80 80 72 72 68 74 72 Reading 2 (after) 79 78 70 72 70 72 70 75 80 74 Volunteer 83 10

Explanation / Answer

From the given data we havve

As p-value is less than the significance level of 0.05, we reject the null hypothesis. This means there is significant evidence to conclude that yoga exercise lead to decrease in resting heart rate

.

Before(1) After(2) n 10 10 mean() 75.4 74 std. dev. 4.64758 3.858612

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