Homework: Section 4.2 Homework Score: 0 of 1 pt X) 4.2.13 Sa 3 of 5 (3 complete)

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Homework: Section 4.2 Homework Score: 0 of 1 pt X) 4.2.13 Sa 3 of 5 (3 complete) HW Score: 27.27%, 3 of 11 Question Help The least-squares regression equation is y = 460 5x + 22,744 where y is the median income and x is the percentage of 25 years and older with at least a bachelors degree in the region. The scatter diagram indicates a linear relation between the two variables with a correlation coefficient of 0.6213. Complete parts (a) through (d) 15 20 25 30 35 40 45 50 55 60 (a) Predict the median income of a region in which 25% of adults 25 years and older have at least a bachelor's degree $ 34,257 (Round to the nearest dollar as needed.) (b) In a particular region, 27.6 percent of adults 25 years and older have at least a bachelor's degree. The median income in this region is $32,253. Is this income higher than what you would expect? Why? This is lower than expected because the expected income is $ Round dollar as needed.) lower .. 1.1 -G :/i '. (..) More higher Enter y e answer box and then click Check Answer

Explanation / Answer

Let's find expected income for x = 27.6

y = 460.5 * x +22744 =( 460.5 * 27.6) +22744 = 35,453.8

So the expected income is $35454

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