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MATH 221 Week 3_Quiz. Graded A+

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(CO 1) A survey of 1272 pre-owned vehicle shoppers found that 8% bought the extended warranties. What is the population and what is the sample? Correct! Population: pre-owned vehicle shoppers; Sample: 1272 pre-owned vehicle shoppers Population: pre-owned vehicle shoppers; Sample: the 8% that bought extended warranties Population: 1272 pre-owned vehicle shoppers: Sample: pre-owned vehicle shoppers Population: 1272 pre-owned vehicle shoppers; Sample: the 8% that bought extended warranties See text page 3 Question 2 2 / 2 pts (CO 1) The measurements of 100 products from the assembly line show that 99% are correct. Is this percentage a parameter or a statistic and why? Correct! Statistic as it represents the sample Parameter as it represents the population Statistic as it represents the population Parameter as it represents the sample See text page 4 Question 3 2 / 2 pts (CO 1) Classify the data of the number of customers at a restaurant. Classical Qualitative Correct! Quantitative Statistics See text page 9 Question 4 2 / 2 pts (CO 1) The data set that lists the number of performances for each Broadway show in 2017 would be classified as what type of data? Correct! Ratio Nominal Interval Ordinal See text pages 10-11 Question 5 2 / 2 pts (CO 1) A data set that includes the shows on a station during the day would be classified as what type of data? Ratio Interval Ordinal Correct! Nominal See text pages 10-11 Question 6 2 / 2 pts (CO 1) What type of data collection might be best to estimate the amount of time individuals spend socializing? Simulation Correct! Observational Survey Experiment See text pages 17-19 Question 7 2 / 2 pts (CO 1) What type of data collection might be best to study the effect of a terror attack on a city’s electrical system? Survey Correct! Simulation Experiment Observational See text pages 17-19 Question 8 2 / 2 pts (CO 1) You need to study the satisfaction of customers of a specific restaurant. You decide to randomly select one customer at each table. This would most closely describe which type of sampling technique? Correct! Stratified Cluster Systematic

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