Suppose a researcher is interested in the effectiveness in a new childhood exercise program implemented in a SRS of schools across a particular county. In order to test the hypothesis that the new program decreases BMI (Kg/m2), the researcher takes a SRS of children from schools where the program is employed and a SRS from schools that do not employ the program and compares the results. Assume the following table represents the SRSs of students and their BMIs. Student Intervention Group: Group 1BMI(kg/m2)Student Control Group: Group 2BMI(kg/m2) A18.6A21.6 B18.2B18.9 C19.5C19.4 D18.9D22.6 E24.1 F23.6 Assuming that all the necessary conditions are met (normality, independence, etc.) carry out the appropriate statistical test to determine if the new exercise program could decrease BMI (Kg/m2). Use an alpha level of 0.05 X=BMI mu_1 (?1): mean BMI of population from which Group 1 was sampled mu_2 (?2): mean BMI of population from which Group 2 was sampled What is the P-value answer choices 0.025 to 0.05 0.05 to 0.1 0.01 to 0.025 0.1 to 0.2
Suppose a researcher is interested in the effectiveness in a new childhood exercise program implemented in a SRS of schools across a particular county. In order to test the hypothesis that the new program decreases BMI (Kg/m2), the researcher takes a SRS of children from schools where the program is employed and a SRS from schools that do not employ the program and compares the results. Assume the following table represents the SRSs of students and their BMIs.
Student Intervention Group: Group 1BMI(kg/m2)Student Control Group: Group 2BMI(kg/m2)
A18.6A21.6
B18.2B18.9
C19.5C19.4
D18.9D22.6
E24.1
F23.6
Assuming that all the necessary conditions are met (normality, independence, etc.) carry out the appropriate statistical test to determine if the new exercise program could decrease BMI (Kg/m2). Use an alpha level of 0.05
X=BMI
mu_1 (?1): mean BMI of population from which Group 1 was sampled
mu_2 (?2): mean BMI of population from which Group 2 was sampled
What is the P-value
answer choices
0.025 to 0.05
0.05 to 0.1
0.01 to 0.025
0.1 to 0.2
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