In Tilton school there are 380 students in key stage 3
240 students in key stage 4
110 students in ket stage 5
phoebe is carrying out a survey she needs a sample of 100 students stratified by key stage 3 there should be in the sample

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

Of the ones listed here, the factor that had the greatest impact on the eventual destruction of native americans' ways of life was the development of the a) automobile. b) highway. c) railroad. d) steamboat.

What’s 8y+48 and factor each expression completely