Areal estate developer is considering investing in a shopping mall on the outskirts of atlanta, georgia. three parcels of land are being evaluated. of particular importance is the income in the area surrounding the proposed mall. a random sample of four families is selected near each proposed mall. following are the sample results. at the 0.05 significance level, can the developer conclude there is a difference in the mean income? use the usual six-step hypothesis testing procedure.

60.9774

step-by-step explanation:

because when you add 47.6 plus 7.32 equals 54.92

and when you add .0574 + 6= 6.0574

and when you add 54.92 and 6.0574 you get the answer of 60.9774.

plzz mark brainlest last one got deleted. cause i didn't explain it but i did but i understand what the mod meant

it is a horizontal line.

step-by-step explanation:

total income = price of one ticket   *   number of tickets sold

  y                 =     4                                   x

so the equation is y=4x     with x≥0   because number of tickets sold can not be negative

thus the equation is a semi -line with an end point at

(0,0)

passing through :

x=1     y=4(1) = 4   so through (1,4)