Statistics questions

Statistics
Tutor: None Selected Time limit: 1 Day

Apr 13th, 2015

Standard error = sqrt( 12.062/32+11.822/44)=2.77856= 2.779

z = (86.79-79.92)/2.779 = 6.87/2.779=2.47


Apr 13th, 2015

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Apr 13th, 2015
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Apr 13th, 2015
May 27th, 2017
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