Apollster wishing to draw inferences about the population of american adults decides to draw its sample by randomly dialing landlines across the country. given that many people only have a cell phone and that people who are wealthier and older are more likely to keep a landline, what could this strategy produce

Biased sample

Explanation:

In statistics, a biased sample refers to a non-random sample of the population. This means that in a biased sample all the individuals are not equally likely to be selected to be part of the sample. This results in groups from the population not being represented in the sample.

Thus, when we have a biased sample, the results of the study will likely be biased if this error in sampling is not taken into account.

In this example, the pollster RANDOMLY dials landlines across the country. However, not all people in the country have landlines (many people have only cellphones and the older wealthier people are more likely to have a landline). Therefore, not all the people from the country have the same probability of being selected for this poll and people who don't have landlines (probably younger people or not so wealthy people) will not be represented in the sample.

Thus, this would be an example of a biased sample.

the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.

marginal cost is a microeconomic measure that us to evaluate the extent to which the level of production of a good is sustainable in accounting, that is, to how many quantities the company plans to profit from the production of the good.

the concept of marginal cost is simple, it means the cost of producing one more item. for example, in the case of pies, the marginal cost is the cost of producing one more pie than those that have already been produced.

it is important to understand that productive activity influences marginal cost. the marginal cost of some goods can be very high, while others may be insignificant. for example, the marginal cost of producing an extra plane is very high. already the marginal cost of a water company to provide 1l more water is derisory.

in the case of pies, the cost involves the inputs, the labor and the fixed cost, which involves the fixed space of the bakery. the level of production initially has the marginal cost decreasing because there is space and manpower available. however, to produce more you have to hire more workers and buy more inputs. if physical space is limited, workers will conflict with places, inputs and their productivity will decrease, meaning there is an optimum point of production for each level of space and manpower. from this point on, the productivity of the workers will be getting smaller because of lack of space, so that the marginal cost of producing one more pie will be increasing. so, although you have not posted the chart, but if you have the answer, you can see that my explanation goes according to the marginal cost curve that will increase from the 4th pie, answer (c).