Use data from a sample survey to estimate HSS.IC.B.4 Grade 10 SBAC Practice Test Questions TOC | Lumos Learning

Use data from a sample survey to estimate HSS.IC.B.4 Question & Answer Key Resources Lumos StepUp - Smarter Balanced Online Practice and Assessments - Grade 10 Mathematics

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A welding manufacturing company prides itself on the accuracy of the measurements of the parts the company manufactures. A specific part is supposed to be 7.25 millimeters long. The company tested 200 of the parts and found that the mean size of the parts in the sample was 7.38 inches long. Given the table below that shows the common z-scores. What is the margin of error for a 99% confidence interval for the parts' size?

  1. 1.023
  2. 1.344
  3. 1.433
  4. 1.214


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