A grocery store sells tangerines in ¼ kg bags. One day a customer bought 4 kg of tangerines for a school party.

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.

Ateacher brought a pack of 17 batteries . each calculator uses 3 batteries . how many calculator can the teacher fill with batteries

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities