Question

Supporters of a ballot referendum to reduce the number of traffic light cameras wish to determine the level of support among likely voters and towards that end they will be conducting a survey. What is the minimum number or people that the organization should survey to be 99% confident that their estimate is within a 0.05 margin of error of the true proportion? Assume that there is no prior knowledge about voters' opinions of red light cameras. (You must show work and/or TI command(s) to receive full credit) TTTT Paragraph Arial 3 (1200 E. E T. 3 D D Q 3 TT. fx Mathups BE HTML CSS

Answer 1

2 n = ( 2x/ Phone P(1-P) Zah = 2.58 (-NORISINV(0.01/2)) -> Excel a E = 0.05 P = 0.5 ( NO prior lufo.) 2 n = (2.58 x0.5 0.5 0.05 =666