1 answer

We use the data in the table below and the sign test to determine whether the...

Question:

We use the data in the table below and the sign test to determine whether the true median score on a certain test is signific

We use the data in the table below and the sign test to determine whether the true median score on a certain test is significantly different from 0.67. 42 39 62 44 91 51 55 76 82 85 67 64 77 61 52 What is the p-value of the test? 0.09 0.18 0.79 O none of the answers provided here 0.21

Answers

score(xi) difference=xi-μ̃ Sign
91 24 +
42 -25 -
39 -28 -
62 -5 -
55 -12 -
82 15 +
67 0 0
44 -23 -
51 -16 -
77 10 +
61 -6 -
52 -15 -
76 9 +
85 18 +
64 -3 -
n = 14
positive signs ("+") = 5

P(getting 5 or less +ve signs out of 14 given p=0.5):

p value = 2*P(T<=5)= 0.4240

Correct option is: None of the answers provided here

.

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