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2 Oct 2019

What the statement "The IQ scores of students at the local college." tells about the data?

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Hubert Koch
Hubert KochLv2
2 Oct 2019
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Related textbook solutions

Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208

Related questions

Some IQ tests are standardized to a Normal model, with a mean of 100 and a standard deviation of 15.

  1. In what interval would you expect the central 95% of IQ scores to be found?
  2. About what % of people should have IQ scores above 115
  3. About what % of people should have IQ scores between 70 and 85?
  4. about what % of people should have IQ scores above 130?
  5. draw a model for these IQ scores. Clearly label it, showing what the 68-95-99.7 Rule predicts.

Some IQ tests are standardized to a Normal model, with a mean of 100 and a standard deviation of 15.

  1. In what interval would you expect the central 95% of IQ scores to be found?
  2. About what % of people should have IQ scores above 115
  3. About what % of people should have IQ scores between 70 and 85?
  4. about what % of people should have IQ scores above 130?
  5. draw a model for these IQ scores. Clearly label it, showing what the 68-95-99.7 Rule predicts.

Ā 

Here are the IQ test scores of 10 randomly chosen fifth-grade students: 143 136 124 121 126 133 97 109 117 118 The mean of these scores (rounded to one decimal place) is

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