3. The data in the table to the right are based on the results of a survey comparing the commute time of adults to their score on a well-being test. Complete parts (a) through (i) below. Use α = 0.05. (12 points) Commute time 13 15 20 30 40 50 65 Well-Being score 70 65 60 55 50 50 45 a. Draw a scatter diagram and indicate the type of association. b. Find a correlation coefficient (write formula and round your answer to 2 decimal places) c. Write null Hypothesis d. Find P-value. Round to 4 decimal places. e. Write your conclusion in the context of the application:. f. Write the Least square regression equation (write formula and round your answer to 2 decimal places) g. Predict the Well-Being score when commute time is 45 min. h. What is coefficient of determination variation and unexplained variation? Round to 2 decimals. i. Does correlation imply causation?
Added by Phillip L.
Step 1
To draw a scatter diagram, we plot the commute time on the x-axis and the well-being score on the y-axis. Then, we plot each data point as a dot on the graph and connect them. The scatter diagram shows a negative association between commute time and well-being Show more…
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