AP Stat MC
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For a standard normal variable z, P(z<1.5)=
0.933
A study of existing records of 27,000 automobile accidents involving children in Michigan found that about 10% of children who were wearing a seatbelt (group SB) were injured and that about 15% of children who were not wearing a seatbelt (group NSB) were injured. Which of the following statements should NOT be included in a summary report about this study?
A. This study demonstrates clearly that seat belts save children from injury.
