In a certain course, 27% of the students withdraw before the end of the semester. An educational company offers the class a free trial of an instructional software package designed to help student involvement. During the trial semester, 725 students took the course and used the software, of which 178 ended up withdrawing. Conduct a hypothesis test to determine if this software should be used in future semesters to lower the withdrawal rate. What is the test statistic?

my answer is$ 12

step-by-step explanation:

because 15 -2=12

41*67/2=1373.5

step-by-step explanation:

i just used a calculator

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation:

answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.