Type II error hypothesis question

  • Thread starter theBEAST
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Homework Statement


Here is the question (I am only confused about part b):
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Here is the solution given by my professor:
ZVVYyrN.png


The Attempt at a Solution


However, I do not agree with part b and honestly have no clue where they got that formula from. I used the method taught in my class along with a bit of intuition and came up with a beta value of 0.4825. Does anyone agree with me work or is the solution from the professor actually correct?
XIwPuTZ.png
 

Answers and Replies

  • #2
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Anyone got an idea? :O
 

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