In Recent Years the Average Speed Along a Dangerous Stretch

Multiple Choice

In recent years the average speed along a dangerous stretch of Highway 26 has been reported to be 55.8 mph.You plan to take a sample of cars along that stretch of highway to determine if the average speed recently is different from the reported average.What hypotheses would be appropriate for a hypothesis test here? Use a "status quo" approach to choose your null hypothesis.

A) H₀: µ = 55.8 mph
H_a: µ ≠ 55.8 mph
B) H₀: µ ≠ 55.8 mph
H_a: µ = 55.8 mph
C) H₀: µ > 55.8 mph
H_a: µ ≠ 55.8 mph
D) H₀: µ < 55.8 mph
H_a: µ = 55.8 mph
E) H₀: µ > 55.8 mph
H_a: µ = 55.8 mph