Answer:
B. Consumer surplus is the difference between the maximum price a consumer is willing to pay for a good or service and its market price.
Explanation:
As we know that the consumer surplus shows a difference between the maximum price willing to pay for a good or for rendering the service and the market price
In mathematically,
The consumer surplus = Willing to pay - Market price
Therefore, the correct statement is option B as the rest of the statements are wrong.
Answer:
And we can find this probability using the complement rule and excel or a calculator and we got:
Explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the rating score of a population, and for this case we know the distribution for X is given by:
Where and
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
If we apply this formula to our probability we got this:
And we can find this probability using the complement rule and excel or a calculator and we got:
Answer:
15.45%
Explanation:
Expected return of portfolio = (R1*W1) + (R2*W2 ) + (R3*W3) (Where R means Expected Return of stock and W means Weight of stock)
Expected return of portfolio = (15%*0.25)+(18%*0.45)+(12%*0.30)
Expected return of portfolio = 3.75% + 8.1% + 3.6%
Expected return of portfolio = 15.45%
So, the expected return of the portfolio above is 15.45%
Answer: The central limit theorem is important in statistics because if the variable is larger, the sample distribution of the mean will be normal regardless of how the population size is.
Explanation: The central limit theorem is also referred to as CLT. The CLT will fluctuate as different variables are added while trying to achieve normal distribution for their variables. When trying to find out the equal population, different variables are added to test out the theories.
Act accordingly to the country's situation.