A recent death of a toddler traced back to dangerous levels of bromine in his "Lift-it-Luke" toy has prompted the Consumer Product Safety Commission

A recent death of a toddler traced back to dangerous levels of bromine in his "Lift-it-Luke" toy has prompted the Consumer Product Safety Commission to test 500 "Lift-it-Luke" toys from the same manufacturer to see whether or not these levels of bromine were greater than 10.0 micrograms/mL, which is considered a potentially dangerous level. What is the null hypothesis of this claim?

(a) µ ≥ 10.0

(b) µ < 10.0

(c) µ = 10.0

(d) µ /= 10.0

(e) µ ≤ 10.0