Statistics questions

Statistics
Tutor: None Selected Time limit: 1 Day

Apr 13th, 2015

xbar1-xbar2 = 77.2-63.7 = 13.5

Standard error = sqrt(11.122/214+15.952/216)= 1.325

Critical value = 1.645

Margin of error = 1.645 *1.325 = 2.2

Lower limit =13.5 -2.2 = 11.3

Upper limit =13.5+2.2 =15.7


Apr 13th, 2015

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