In hilly areas, farmers often contour their fields to reduce the erosion due to water flow. this might have the unintended effect of changing the yield since the rows may not be aligned in an east-west direction to take advantage of direct sunlight.

the following summary statistics show the yields in hundreds of bushels per acre of randomly selected plots of land along hillsides as well as level plots of land nearby with similar soil characteristics.

quartiles

type minimum 10% 25% median 75% 90% maximum
hilly 10.9 10.9 13.3 29.2 58.1 97.4 100%
level 10.9 11.2 18.5 39.3 61.5 103.4 118

means and standard deviations

type number mean standard deviation standard error of mean
hilly 12 39.7 30.4 8.8
level 12 44.6 31.1 9.0

a) describe and compare the distributions.
b) based on your plots, what can you conclude about the types of land.

the system of inequity is

step-by-step explanation:

from the given graph it is noticed that we have two related lines. one is solid and another is dashed.

if a line passing through two points, then the equation of line is

the solid line passing through the points (0,4) and (4,0).

the related equation of solid line is .

similarly, find the related equation of dashed line. the dashed liune passing through the points (0,0) and (3,1).

the related equation of dashed line is

from the given graph it is noticed that the point (0,1) lies on the shaded region, therefore the point (0,1) must be satisfied by the related equations.

check the related equations by the point (0,1).

this statement is true if the sign of inequality is < instead of equality. since it is an solid line therefore the sign of inequality will be . the required inequality is

similarly, check the second related equation.

it is a dashed line, so this statement is true if the sign of inequality is > . the required inequality is

step-by-step explanation: i dont

the domain of a function is the set of input values, x , for which a function is defined. the domain is shown in the left oval in the picture below. the function provides an output value, f(x) , for each member of the domain.