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In the Canadian legal system, a defendant is assumed innocent until proven guilty. Suppose that you regard a court trail as a hypothesis test in which the null and alternate hypothesis are as follows:
Ho: Defendant is innocent
Ha: Defendant is guilty
a) Explain the meaning of a Type I error.
b) Explain the meaning of a Type II error.
c) If you were the defendant, would you want a to be large or small? Explain your answer.
d) If you were the prosecuting lawyer, would you want b to be large or small? Explain your answer.
For a normal distribution where the mean is 50 and the standard deviation is 10, what percentage of the area is
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Assuming a two-tailed hypothesis test with a = .05, what is the chance of making a Type I error?
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