Based on the 95% confidence interval, [2.06, 27.00] about the association between lifespan and presence of children: C. Because the interval does not contain 0, we can conclude that there is not a significant association between the variables.
A confidence interval can be defined as a range of estimated values that defines the probability that a population parameter would fall or lie within it.
A positive correlation can be defined as a terminology that is used to described a situation (scenario) in which two variables move in the same direction as they are in tandem.
This ultimately implies that, a positive correlation exist when two variables have a linear relationship or are in direct proportion. Thus, when one variable increases, the other increases, as well.
Based on the 95% confidence interval, [2.06, 27.00] about the association between lifespan and presence of children: C. Because the interval does not contain 0, we can conclude that there is not a significant association between the variables.
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Complete Question:
Do men with children tend to live longer, on average, than those without? To investigate, a group of Cal Poly students randomly sampled men from the obituaries page on the San Luis Obispo Tribune's webpage between June and November 2012. For each man selected, they noted the age at which the person died and whether or not the person had any children.
What can you conclude about the association between lifespan and presence of children based on the 95% confidence interval, [2.06, 27.00]?
A. We cannot make any conclusions about the association based on the confidence interval.
B. Because the interval does not contain 0, we cannot conclude whether or not there is a significant association between the variables.
C. Because the interval does not contain 0, we can conclude that there is not a significant association between the variables.
D. Because the interval does not contain 0, we can conclude that there is a significant association between the variables.
