The scatterplot contains data points, showing the number of hours a coffee shop is open (x) and the number of customers served (y). A graph with time open (hours) on the x-axis and customers on the y-axis. Line c is the line of best fit.

Using the least-squares regression method, which is the line of best fit?

line a
line b
line c
line d

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

Which of the following is the shape of a cross section of the figure shown below

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0