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Question 2. Which of the following test statistics would be a reasonable choice to help differentiate between the two hypotheses? Hint: For a refresher on choosing test statistics, check out the textbook section on Test Statistics (mpsﬂwwwjnferentialthinking.comlcha t 11 i ion -an - n rtainty.html#§tep-2:-The- Test-Statistic). 1. The proportion of area codes that are 781 in 50 random spam calls 2. The total variation distance (TVD) between probability distribution of randomly chosen area codes. and the observed distribution of area codes. (Remember the possible area codes are 200-999 inclusive) 3. The probability of getting an area code of 781 out of all the possible area codes. 4. The proportion of area codes that are 781 in 50 random spam calls divided by 2 5. The number of times you see the area code 781 in 50 random spam calls Assign reasonable_test_statistics to an array of numbers corresponding to these test statistics. In [4]: reasonable_test_statistics = make_array(1,4,5) In [5]: ok.grade("q1_2");

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