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Statistics questions

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Apr 20th, 2015

null hypothesis: no difference between algorithms

alternate hypothesis: newer has lower mean completion time than current one

it is an one tailed test

critical value at 0.01% significant level=2.33

Z=(x1-x2)/(s1^2/n1+s2^2/n2)^0.5

=0.17/0.747=0.22

given pair satisfy null hypothesis ,since value is less than critical value

reject null hypothesis if limits are 

above upper limit=1.74

below lower limit=  -1.74



May 1st, 2015

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