The given scatterplot shows students’ grades compared to the number of hours of work they put into preparing for a test. According to the data, which answer is closest to the grade increase for every hour a student worked? a. 1/10
b. 1
c. 5
d. 10

Horace's speedometer reads 60 miles per hour, but during a road test he finds that he was actually driving 58 mph. what is the percent error in horaces speedometer?

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.

What is the range for 31,39,29,34,37,24,36,33,34,28