The side length of a square is represented by the expression n−1.5. Which are equivalent expressions for the perimeter of the square? Choose all that apply.

4n−1.54 n minus 1 point 5

4(n−1.5)4 times open paren n minus 1 point 5 close paren

n+n+n+n−1.5−1.5−1.5−1.5n plus n plus n plus n minus 1 point 5 minus 1 point 5 minus 1 point 5 minus 1 point 5

1.5n−41 point 5 n minus 4

2(n−1.5)+2(n−1.5)

Now, martin can reasonably guess that the standard deviation for the entire population of people at the mall during the time of the survey is $1.50. what is the 95% confidence interval about the sample mean? interpret what this means in the context of the situation where 95 people were surveyed and the sample mean is $8. use the information in this resource to construct the confidence interval.