If household saving decreases by $4 million, business saving increases by $4 million, and the government budget deficit decreases by $4 million, then private saving and public saving .

private saving does not change and public saving increases

Explanation:

given data

household saving decreases = $4 million

business saving increases = $4 million

government budget deficit decreases = $4 million

solution

as we know Budget deficit = G - T

and

public saving = T- G

so here we can say deficit decreased means the public saving increased

and

here Private saving is  = sum of saving of households + sum of saving of businesses   1

Private saving = -4 + 4

Private saving = 0

so that here private saving does not change

private saving does not change and public saving increases

its simple as this, microeconomics is the study of economics at an individual, group or company level, macroeconomics on the other hand, is the study of a national economy as a whole.

hope it =^-^=