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MMLU / A study was conducted to test a new style of keyboard in preventing repetitive…

Problem

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question

A study was conducted to test a new style of keyboard in preventing repetitive stress disorders. Volunteers who have had problems with such injuries were randomly assigned to use either a traditional keyboard or the new design. A significance test was conducted with the alternative hypothesis that a smaller proportion of those using the new keyboard will suffer injuries than those using the traditional keyboard. The resulting P-value was 0.07. Which is a correct interpretation of this P-value?

choices

  1. The null hypothesis should be rejected.
  2. The null hypothesis should be accepted.
  3. There is a 7% chance that the null hypothesis is correct.
  4. There is a 7% chance of getting a difference between the two groups at least as large as the observed difference if the new keyboard is really no better at preventing injuries.

subject

high_school_statistics

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