Astudy has shown that a man differs from women on their political party membership. the study was based on a sample of 1000 men and 800 women. what might be wrong with this study?

There is no random sampling.

The population of interest is actually the whole US adult population, from which a random sample has to drawn. If the sample is not random, it is not possible to infer conclusions, from the data generated during the study, to the whole population.

A gender distinction has been made when selecting the individuals for the sample in order to reach 1000 inviduals that satisfy the condition of being males and other 800 that satisfy the condition of being women. Therefore, the sample individuals have not been randomly drawn from the population of interest if a certain number of them is conditioned by a certain characteristic. Therefore, it is impossible to infer conclusions about political memberships in terms of gender for the whole population with a non-random sample.

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer

changes in factors like average income and preferences can cause an entire demand curve to shift right or left. this causes a higher or lower quantity to be demanded at a given price. demand curves relate the prices and quantities demanded assuming no other factors change. it is important for consumers to know this information, because it is crucial for them to know what they can afford and can't afford. i hope this .