Suppose that a random sample of 208 twenty-year-old men is selected from a population and that their heights and weights are recorded. A regression of weight on height yields ModifyingAbove Weight with caret equals(negative 103.3864 )+ 4.0976timesHeight, Upper R squared = 0.842, SER = 10.6080 (2.2360 ) (0.3224)

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33

df =

both have same length