In a, the four key question is Q: Estimation or Hypothesis testing? S: Sample da
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Question
In a, the four key question is
Q: Estimation or Hypothesis testing? S: Sample data or experiment data? T: Type of data, one variable or two? Categorical or numerical? N: how many samples or treatments?
Also for part B, plz explain the answer in five-step process format (HMCCC or EMCCC), the first picture is the question of 11.3. the question is on the second paper,plz give steps ,thanks.
proportions Example 11.3 Electric Cars The article "Americans Say No to Electric Cars Despite Gas Prices" (USA Today, May 25,201) describes a survey of public opinion on issues related to rising gas prices. The surve was conducted by Gallup, a national polling organization. Each person in a representa- tive sample of low-income adult Americans (annual income less than $30,000) and each person in an independently selected representative sample of high-income adult Americans (annual income greater than $75,000) was asked whether he or she would consider buy- ing an electric car if gas prices continue to rise. In the low-income sample, 65% said that they would not buy an electric car no matter how high gas prices were to rise. In the high- income sample, 59% responded this way. The article did not give the sample sizes, but for the purposes of this example, suppose the sample sizes were both 300. One question of interest is whether the proportion who would never consider buying an electric car is different for the two income groups. The following table summarizes what you know so far.Explanation / Answer
In a, the four key question is
Q: Estimation or Hypothesis testing? S: Sample data or experiment data? T: Type of data, one variable or two? Categorical or numerical? N: how many samples or treatments?
Also for part B, plz explain the answer in five-step process format (HMCCC or EMCCC), the first picture is the question of 11.3. the question is on the second paper,plz give steps ,thanks.
proportions Example 11.3 Electric Cars The article "Americans Say No to Electric Cars Despite Gas Prices" (USA Today, May 25,201) describes a survey of public opinion on issues related to rising gas prices. The surve was conducted by Gallup, a national polling organization. Each person in a representa- tive sample of low-income adult Americans (annual income less than $30,000) and each person in an independently selected representative sample of high-income adult Americans (annual income greater than $75,000) was asked whether he or she would consider buy- ing an electric car if gas prices continue to rise. In the low-income sample, 65% said that they would not buy an electric car no matter how high gas prices were to rise. In the high- income sample, 59% responded this way. The article did not give the sample sizes, but for the purposes of this example, suppose the sample sizes were both 300. One question of interest is whether the proportion who would never consider buying an electric car is different for the two income groups. The following table summarizes what you know so far.Related Questions
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