Find the difference of the following expressions. 1. -5 - +2 =

2. +95 - +26 =

3. +111 - -11 =

don’t answer if you are not sure

In a school 2/3 of the students study a language of those who study a language 2/5 study french

Which is the correct excel formula for the 80th percentile of a distribution that is n(475, 33)? =norm.dist(80,475,33,1) =norm.inv(0.80,475,33) =norm.s.inv((80-475)/33)?

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.