MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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A researcher in behavioral medicine believes that stress often makes asthma symptoms worse. The research decides to examine the effect of relaxation training on the severity of asthma symptoms. A sample of 5 patients is selected for the study. During the week before treatment, the researcher records the severity of the symptoms by measuring how many doses of medication are needed for asthma attacks. Then the patients receive relaxation training. For the week following training, the research once again records the number of doses required by each patient. The mean difference is calculated Md= -4 with SS= 16.
a. Using symbols, state the hypothesis for a two-tailed test.
b. With a two tailed a=0.05, identify the degrees of freedom and the critical regions.
c. Calculate the sample variance.
d. Calculate the estimated standard error
e. Compute the t statistic and state the conclusion of the findings.
f. Calculate the estimated d and r2.
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