+59 A scientist has a hypothesis that as light decreases, the proportion of cars speeding decreases. He finds that at light level X1 (a bright day), the proportion of cars speeding is p=0.69 . At light level X2 (at dusk), the proportion of cars speeding is p=0.61. At light level X3 (at night), the proportion of cars speeding is p=0.55 . Should the hypothesis be rejected or should it fail to be rejected?
Fail to be rejected, because the proportion of drivers speeding goes down as it gets darker
Rejected, because the data do not support the hypothesis that as light decreases, the proportion of cars speeding decreases
Fail to be rejected, because this was an experimental study and the hypothesis is always confirmed in this form of study
Rejected, because one of the limits of an experimental study such as this is that causation cannot be made between the variables
