Suppose that a defined population is all men, and a survey is being
conducted. Which of these is an example of selection bias?
O
A. Including men over 50 in the selection process of the survey
B. Excluding men over 50 from the selection process of the survey
O
C. Excluding women from the selection process of the survey

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.