statistics

The least-squares regression equation is y = 649.7x + 17.809 where y is the median income and x is the percentage of 25 years and older with at least a bachelor's degree in the region. The scatter diagram 55000 indicates a linear relation between the two variables with a correlation coefficient of 0.7262. Complete parts (a) through (d). BL DOU LePER 25000 15 20 25 30 35 40 45 50 55 60 Bachelor's (a) Predict the median income of a region in which 30% of adults 25 years and older have at least a bachelor's degree. $ 37,300 (Round to the nearest dollar as needed.) (b) In a particular region, 28.9 percent of adults 25 years and older have at least a bachelor's degree. The median income in this region is $33.311. Is this income higher than what you would expect? Why? This is than expected because the expected income is s (Round to the nearest dollar as needed.)