4% of Trucks of a Certain Model Have Needed New

Multiple Choice

4% of trucks of a certain model have needed new engines after being driven between 0 and 100 kilometres.The manufacturer hopes that the redesign of one of the engine's components has solved this problem.

A) H0: p < 0.04 HA: p = 0.04
B) H0: p > 0.04 HA: p = 0.04
C) H0: p < 0.04 HA: p > 0.04
D) H0: p = 0.04 HA: p < 0.04
E) H0: p = 0.04 HA: p > 0.04