Consider the following multiple regression modelupper y subscript i equals beta 0 plus beta 1 upper x subscript 1 i baseline plus beta 2 upper x subscript 2 i baseline plus u subscript iiyi=β0+β1x1i+β2x2i+uisuppose you want to test the null hypothesis that beta 1 equals 0β1=0 and beta 2 equals 0β2=0. is the result of the joint test implied by the result of the two separate tests?

Y

Step-by-step explanation:

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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: