9. Chapter 9, Problem 9.2 Aa Aa . A polling organization plans to sample 1,000 a
ID: 3330764 • Letter: 9
Question
9. Chapter 9, Problem 9.2 Aa Aa . A polling organization plans to sample 1,000 adult Americans to estimate the proportion of Americans who think crime is a serious problem in this country. In the context of this poll, explain the difference between a statistic and a parameter. The proportion of all adult Americans that thinks crime is a serious problem is | value, while the proportion of the 1,000 adults in the sample who think crime is a serious problem is -value. What is the parameter of interest to the polling organization? O The 1,000 adults in the sample of adult Americans O The proportion of the 1,000 adults in the sample who think crime is a serious problem O The proportion of all adult Americans that thinks crime is a serious problem O The total population of all adult Americans What will be the statistic? O The 1,000 adults in the sample of adult Americans The total population of all adult Americans O The proportion of the 1,000 adults in the sample that thinks crime is a serious problem O The proportion of all adult Americans that thinks crime is a serious problem Which of the following happen after the poll is taken? Check all that apply. The value of the statistic will be known. The statistic will give an estimate of the value of the parameter. The parameter will give an estimate of the value of the statistic. The value of the parameter will be known.Explanation / Answer
Parameters are numbers that summarize data for an entire population. Statistics are numbers that summarize data from a sample
The proportion of all adult Americans that think crime is a serious problem is parameter value, while the proportion of the 1000 adults in the sample who think crime is a serious problem is statistic value.
The proportion of all Americans that thinks crime is a serious problem
The proportion of the 1000 adults in the sample that thinks crime is a serious problem
The value of the statistic will be known
The statistic will give an estimate of the value of the statistic
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