A major dish network chain is considering opening a new office in an area that currently does not have any office to serve residents of that area. The chain will open store only if more than 7,200 of the 24,000 households in the area shows interest to get dish network installation in their houses. A telephone poll of 625 randomly selected households in the area shows that 425 households are not interested in the dish network installations. Using 95% confidence level, the chain should a. use sample proportion 0.68 for making decision to open the office b. not open its office in the area c. use Zα=1.96 to make decision to open the office d. consider all of a, b, c suggestions for making a decision to open office

i dont know

step-by-step explanation:

what is the model?

step-by-step explanation:

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.

step-by-step explanation: