A city council conducted a survey on speed bumps to see what residents preferred. The council asked every resident in one particular neighborhood what his or her preferences were. Were the results of the city council's survey valid?
No, because neighborhoods do not have speed bumps.
Yes, because every resident in a neighborhood was surveyed.
No, because the sample was not random.
Yes, because the neighborhood surveyed wanted speed bumps.
A more accurate reason would be that the sample was not big enough to represent the population as a whole, the best answer is "No, because the sample was not random"
