An electronic retailer believes that, at most 40% of their cellphone inventory was sold during november. the retailer surveyed 80 dealers and found that 38% of the inventory was sold. since 38% less than 40%, is the difference of 2 percentage points sampling error or a significant difference? test at .05 level.

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:

1 and 0

step-by-step explanation: