Research suggests that depression significantly increases the risk of developing dementia later in life. Suppose that in a study involving 949 elderly persons, it was found that 22% of those who had depression went on to develop dementia, compared to only 17% of those who did not have depression. a. Choose the relevant population and the sample. (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer. Any boxes left with a question mark will be automatically graded as incorrect.) The sample consists of 949 elderly people. The population is all elderly people. The sample consists of 949 younger people. The population is all younger people, b. Are the numbers 22% and 17% associated with the population or a sample? O Population parameters Sample statistics

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19-12-2022
Mathematics

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Research suggests that depression significantly increases the risk of developing dementia later in life. Suppose that in a study involving 949 elderly persons, it was found that 22% of those who had depression went on to develop dementia, compared to only 17% of those who did not have depression. a. Choose the relevant population and the sample. (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer. Any boxes left with a question mark will be automatically graded as incorrect.) The sample consists of 949 elderly people. The population is all elderly people. The sample consists of 949 younger people. The population is all younger people, b. Are the numbers 22% and 17% associated with the population or a sample? O Population parameters Sample statistics

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rafikiedu08 rafikiedu08 · Answer 1 · 2022-12-22T10:03:55+01:00

The sample consists of 949 elderly people and the population is all elderly people both options are correct and the numbers 22% and 17% represent the sample statistics.

a.

The set that includes the list of all possible individuals in the interesting area of study is termed a population while the portion or a part of the population is termed a sample. The given scenario indicates that the population is all elderly people from which 949 elderly people are selected for the study and so, 949 elderly people are included in the sample. So, option 1 and option 2 are correct for the indicated scenario.

b.

The percentages 22% and 17% are calculated from 949 elderly people that are indicated as samples. Hence, the percentages 22% and 17% are the measure of the sample and so, they represent sample statistics.

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