Is there convincing evidence that height increases as foot length increases? To answer this question, test the
Question:
Is there convincing evidence that height increases as foot length increases? To answer this question, test the hypotheses
a. H0:β1 = 0 versus Ha:β1 > 0.
b. H0:β1 = 0 versus Ha: β1 < 0.
c. H0:β1 = 0 versus Ha:β1 ≠ 0.
d. H0:β1 > 0 versus Ha:β1 = 0.
e. H0:β1 = 1 versus Ha: β1 > 1.
To see if students with longer feet tend to be taller, a random sample of 25 students was selected from a large high school. For each student, x = foot length (cm) and y = height (cm) were recorded. We checked that the conditions for inference about the slope of the population regression line are met. Here is a portion of the computer output from a least-squares regression analysis using these data:
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