Question
The prosecutor in a criminal trial introduces a key piece of evidence -- a letter written by the criminal that was left at the scene
The prosecutor in a criminal trial introduces a key piece of evidence -- a letter written by the criminal that was left at the scene of the crime. The defendant in the case is left-handed, and handwriting experts can often distinguish between the writing of left-handed and right-handed people. The prosecutor asks an expert to analyze the letter. The expert test the hypotheses
Ho: the writer of the letter is right-handed
Ha: the writer of the letter is left-handed
The handwriting expert determines a P-value of 0.002. Using a 1% level of significance, we conclude that:
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