The degenerative disease osteoarthritis most frequently affects weight-bearing joints such as the knee. Stance duration (ms) was measured in separate samples of younger and older adults. younger: n=22 mean=801 s=117 older: n=16 mean=780 s=81 Test the claim that the true average stance is different between younger and older adults. Let population 1= younger population 2= older a. What is the appropriate procedure to test the claim? b.What is the degrees of freedom? Use the conservative formula. c.At 0.05 significance level, what is/are the critical value/s? d.What is the value of the test statistic? Use 2 decimal places e.Construct a 95% confidence interval estimate, what is the margin of error? Use 2 decimal places.
The degenerative disease osteoarthritis most frequently affects weight-bearing joints such as the knee. Stance duration (ms) was measured in separate samples of younger and older adults.
younger:
n=22
s=117
older:
n=16
mean=780
s=81
Test the claim that the true average stance is different between younger and older adults.
Let
population 1= younger
population 2= older
a. What is the appropriate procedure to test the claim?
b.What is the degrees of freedom? Use the conservative formula.
c.At 0.05 significance level, what is/are the critical value/s?
d.What is the value of the test statistic? Use 2 decimal places
e.Construct a 95% confidence
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