Mean, standard deviation and normal distribution HSS.ID.A.4 Grade 10 ACTASPIRE Practice Test Questions TOC | Lumos Learning

Mean, standard deviation and normal distribution HSS.ID.A.4 Question & Answer Key Resources Lumos StepUp High School Algebra 2 - Workbooks and Online Assessments

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Suppose the number of pages in a college ruled notebook is supposed to be 75. The manufacturer is concerned about costs and complaints from the customers. He says each tablet must have no fewer than 74 pages and no more than 76 pages. The management took a random sample of notebooks and counted the number of pages in each. This number was normally distributed with a mean of 75 with a standard deviation of 0.5. What percent of the notebooks have between 74 and 76 pages? Enter the answer rounded to the nearest tenth. Do not include the percent sign.

Resource: Question

Question Type: Numeric Answer

Standard(s):HSS.ID.A.4

Standard Description: Use the mean and standard deviation of a data set to fit it to a normal distribution and to estimate population percentages. Recognize that there are data sets for which such a procedure is not appropriate. Use calculators, spreadsheets, and tables to estimate areas under the normal curve.

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