We conduct an experiment to compare the responses to three different treatments. Each volunteer is randomly assigned to receive one of the three treatments. The response variable is measured for each individual and an analysis of variance F-test is conducted to assess the equality of the means for the three treatments. Responses for each of the three treatments are known to follow normal distributions. Some summary statistics are shown below: Sample Sample Size Standard Deviation n1=6 $1=1.329 n2=6 $2=2.251 n3=6 S3=?? The estimate for the common population variance is 4.544. What is the value of s3? 2.091 2.492 2.449 2.559 2.608