Here are the scores that Jenna has received on her seven quizzes: 16, 13, 20, 16, 12, 17, 18

What is the standard deviation rounded to the nearest tenth?

ITS NOT 2.8 OR 6.6 PLEASE HELP! ​

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.

The distance between two cities is 368 miles. if the scale on the map is 1/4 inch=23 miles, what is the distance between the cities on the map?

1: 4 if the wew 35 surfboards at the beach how many were short boards?