<span>One of the main ways that economists measure a nation's standard of living is by looking at their GDP (Gross Domestic Product). Specifically they look at the GDP per capita because it shows how much the country is producing (in dollar figures) per individual. This can show both the wealth and standard of living for a country in an easily comparable form.</span>
Answer:
24.08
Step-by-step explanation:
Simplifying
120 + -28a = 78
Solving
120 + -28a = 78
Solving for variable 'a'.
Move all terms containing a to the left, all other terms to the right.
Add '-120' to each side of the equation.
120 + -120 + -28a = 78 + -120
Combine like terms: 120 + -120 = 0
0 + -28a = 78 + -120
-28a = 78 + -120
Combine like terms: 78 + -120 = -42
-28a = -42
Divide each side by '-28'.
a = 1.5
Simplifying
a = 1.5
Answer:
This means that there is a 95% probability that the confidence interval will contain the true population mean. Thus, P( [sample mean] - margin of error < μ < [sample mean] + margin of error) = 0.95.