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4. [-/0.33 Points] DETAILS BBUNDERSTAT12 9.1.014.S. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims. y 34 40 35 30 28 USE SALT (a) Make a scatter diagram of the data and visualize the line you think best fits the data. 10 40 35 35 30 30 y (average cost as percentage) as percentage) y (average cost 25 25 20 20 10 20 30 40 50 60 70 10 20 30 40 60 70 x (average number x (average number O of employees) OC of employees) 40 40 35 30 30 as percentage) as percentage) y (average cost y (average cost 25 25 20 20 10 20 30 40 50 60 70 20 30 40 50 60 70 x (average number x (average number of employees) of employees) (b) Would you say the correlation is low, moderate, or strong? positive or negative? strong and positive moderate and positive strong and negative O low and negative low and positive O moderate and negative (c) Use a calculator to verify that Ex = 131, Ex2 = 6623, Ey= 150, Ey= = 4798, and Exy= 2991. Computer. (Round your answer to four decimal places.) r= As x increases, does the value of rimply that y should tend to increase or decrease? Explain. Given our value of r, y should tend to remain constant as x increases. Given our value of r, y should tend to decrease as x increases. Given our value of r, we cannot draw any conclusions for the behavior of y as x increases. Given our value of r, y should tend to increase as x increases. Need Help? Read It Watch It