Identify the population and the sample in the following study. A study of the di
ID: 3208008 • Letter: I
Question
Identify the population and the sample in the following study. A study of the dietary habits of 20,000 men was conducted to find a link between high intakes of dairy products and prostate cancer Determine whether the numerical value is a parameter or a statistic, Explain your reasoning. A survey of 1000 U.S. adults found that 40% think that the Internet is the best way to get news and information. At a college, 90% of the members of the Board of Trustees approved the contract of the new president. A survey of 733 small business owners found that 17% have a current job Opening. Determine whether the data are qualitative or quantitative. Explain your reasoning. A list of debit card pin numbers The final scores on a video game Determine the level of measurement of the data set. Explain your reasoning. A list of badge numbers of police officers at a precinct The horse powers of racing car engines The top 10 grossing films released in a year The years of birth for the runners in the Boston marathonExplanation / Answer
1. Population: Entire human population
Sample: 2000 mean
REASON: Based on the statistics of 2000 men, the population parameters: link between high intakes of dairy products and prostate cancer is studied
2. (a) This is statistic because 40% is the characteric obtained from sample.
(b) This is a parameter because 90% is the characteristic of the Board of Trustees and no generalization is attempted: not a survey.
(c) This is a statistic because 17% is the charactistic of sample.
3. (a) quantitative: because numerical data is involved - debit card pin numbers
(b) qualitative: because the final scores will be in the form of excellent, average, bad ec.
4. (a) Nominal level. REASON: the numbers in this level of measurement are used only to classify the data.
(b) Ratio level. REASON: the observations, in addition to having equal interbals, can have a value 0 also.
(c) Ordinal level. REASON: scale from low level to high level.
(d) Interval level: cannot have 0.