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10.4 Exercise 20

Avg difficulty 2.5

Ten individuals went on a low–fat diet for 12 weeks to lower their cholesterol. The data are recorded in the table. Do you think that their cholesterol levels were significantly lowered?

Starting cholesterol level Ending cholesterol level
140 140
220 230
110 120
240 220
200 190
180 150
190 200
360 300
280 300
260 240

OpenStax Introductory Statistics 2e, 10.4 Matched or Paired Samples, exercise 20

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Adapted from Introductory Statistics 2e © 2023 Rice University. Licensed under CC BY 4.0. Source: Introductory Statistics 2e. Imported at revision 50ec917.