Twelve different video games showing drug use were observed. the duration times of drug use were recorded, with the times (seconds) listed below. assume that these sample data are used with a 0.05 significance level in a test of the claim that the population mean is greater than 80 sec. if we want to construct a confidence interval to be used for testing that claim, what confidence level should be used for a confidence interval? if the confidence interval is found to be 2.8 secless thanmuless than205.1 sec, what should we conclude about the claim? 81 13 565 51 0 56 191 43 187 0 2 58

step-by-step explanation:

this is not a question

the answer is the third / last answer

step-by-step explanation:

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