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A test is made of H0: mean = 27 versus H1: mean < 27. The true value of the mean is 27, and H0 is rejected. Is this a Type I error, Type II error, or a correct decision? How do I determine which is which???

Question 4 options:

1) Type II error

2) Type I error

3) Correct decision

  • Statistics -

    This is definitly an error because Ho was rejected when it was true.

    Google Type I and Type II errors and you will find the definition of each and then you will be able to figure out which error happened here.

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