6.
which survey question is biased?
(1 point)
• which is your favorite, pizza or spaghetti?
• which subject is your favorite, math, which is easy, or english, which is difficult?
• who do you live with: both parents, mother only, father only, or another guardian?
• should children be allowed to stay up as late as they would like?

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.

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class