What are the conditions of the independent variable? What is the dependent variable? b. What are Ho and Ha? c. What is the value of tobt?
A researcher investigates whether daily exercise alters long-term stress levels. On a national
survey, the mean stress level of those who do not exercise is 56.35. For a sample of 10
participants who exercised daily for two weeks, the researcher obtained the following stress
scores:
40 59 48 36 44 43 45 45 32 37
a. What are the conditions of the independent variable? What is the dependent variable?
b. What are Ho and Ha?
c. What is the value of tobt?
d. With ? = 0.05, what is the value of tcrit?
e. Report the statistical results.
f. Estimate the value of ? represented by ?̅.
g. Using the preceding statistics, what conclusions should the researcher draw about the
relationship between these variables?
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