Question

In a poll of 1000 American adults, the number saying that exercise is an important part of daily life was 753.

a) What is the population parameter of interest?
O mean of paired differences
O difference of proportions
O difference of means
O proportion
O mean

Answer 1

The population parameter of interest in the poll of 1000 American adults, where 753 say that exercise is an important part of daily life, is the proportion of the entire population that holds this belief. Here the term 'proportion' represents the parameter we aim to estimate in the given scenario.

Step-by-step explanation:

In a poll of 1000 American adults, where 753 said that exercise is an important part of daily life, the population parameter of interest is the proportion of the entire population of American adults who believe exercise is an important part of daily life. This is because we are looking at a specific characteristic (exercise importance) within the whole group (American adults) which can be generalized to a single value—the proportion who hold this belief.

The term 'population parameter' refers to a value that represents some aspect of a population. In this case, the number 753 of the 1000 surveyed reflects a sample statistic, which is used to estimate the population parameter. Since we are concerned with the fraction or percentage of the population with this belief, we denote this as a proportion. Thus, the correct answer is simply 'proportion'.