t not reasonable to interpret the confidence interval in the cont d) Why is ext
ID: 3311600 • Letter: T
Question
t not reasonable to interpret the confidence interval in the cont d) Why is ext of the problem? recent study suggests that noise pollution can increase the risk of cardiovascular disease. This theory was atd in a recent study where a random sample of adults who have lived in the same home for at least five years ad The nighttime noise level (decibels) was measured in each home. Also, an index of cardiovascular risk easured for each person; this index is called an Agatston score, determined with electron-beam computed tomography. An Agatson score indicates the level of coronary calcification: the higher the score, the greater the cardiovascular risk due to calcification of blood vessels a) What is the explanatory variable? The response variable? the Rossman/Chance applet Analyzing Two Quantitative Variables to make a scatterplot and find the least squares he relationship. Copy and paste the data including top row of Noise Agaston exactly as in the excel b noise. Be careful assigning the explanatory and the response variable in the applet. Print the screen with your se regression line for t scatterplot and analysis so we can refer to it in class. See the handout for what you need and the boxes to check. b) Based on the scatterplot and correlation coefficient give the Direction of relationship: Form: Strength of relationship: . .Explanation / Answer
Solution: a) What is the explanatory variable?
Answer: Explanatory variable is one which is used to explain variability in the response variable. Here the explanatory variable is Noise Level (decibels) during nighttime
The response variable?
Response variable is the output or outcome whose variation is being studied. Here the response variable is Agatston score (An index of cardiovascular risk)
b) For part b could you please share the results and scatter plot
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