Consider the pairs of measurements shown in the table. For these data, SSxx = 38.9, SSyy =

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Consider the pairs of measurements shown in the table. For these data, SSxx = 38.9, SSyy = 33.6, SSxy = 32.8, and yn = -.414 + .843x. x 4 6 0 5 2 3 2 6 2 1 y 3 5 -1 4 3 2 0 4 1 1

a. Construct a scatterplot for these data.

b. Plot the least squares line on your scatterplot.

c. Use a 95% confidence interval to estimate the mean value of y when xp = 6. Plot the upper and lower bounds of the interval on your scatterplot.

d. Repeat part c for xp = 3.2 and xp = 0.

e. Compare the widths of the three confidence intervals you constructed in parts c and d and explain why they differ.

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Statistics For Business And Economics

ISBN: 9781292413396

14th Global Edition

Authors: James McClave, P. Benson, Terry Sincich

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Question Posted: Jul 19, 2024 07:01 PM

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Consider the pairs of measurements shown in the table. For these data, SSxx = 38.9, SSyy =

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Statistics For Business And Economics

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