Pratyusha
Most popular questions and responses by Pratyusha
4th grade
Kara walks 9 blocks to school.Each block is 65 feet long.How many yards does Kara walk to and from school?
asked on April 7, 2010

Statistics
use test for proportions : Formula : ( p1  p2 ) / sqrt ( Pcap * Q cap ( 1/n1 + 1/n2 ) where P cap = (n1p1 + n2p2 )/ (n1 + n2 ) Q cap = 1  P cap
posted on March 19, 2011