The national average for mathematics on a standardized test in 2011 was 524. suppose that the

distribution of scores was approximately bell-shaped and that the standard deviation was

approximately 41. round your answers to one decimal place as needed.

part 1 out of 2

within what boundaries would you expect 95% of the scores to fall?

about 95% of the scores should fall between

and

as

ii6tyhj7 juj3yyj333ju jmyhthhtk7h jg hajj jiijh

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is