Answer:

Step-by-step explanation:
we know that
The <u>Triangle Inequality Theorem</u> states that the sum of any 2 sides of a triangle must be greater than the measure of the third side
so
Applying the Theorem
case 1) 



case 2) 


-----> rewrite
case 3) 



therefore

Standard of living refers to the level of wealth, comfort, material goods and necessities available to a certain socioeconomic class or geographic area. Cost of living is the amount of money needed to cover basic expenses such as housing, food, taxes, and healthcare in a certain place and time period. Stage of life refers to the different phases of life that all individuals pass through in a normal lifetime.
Step-by-step explanation:
From given data,
n = 1496
x = 478
Proportion estimate ( p ) = 
=
= 0.3195 ≅ 0.31
Proportion estimate ( p ) = 0.31
∴ The proportion of new car buyers who prefer foreign cars -> 0.31