Cadmium a heavy metal is toxic to animals Mushrooms however are able to absorb and accumulate cadmium at high concentrations Some governments have a safety limit for cadmium in dry vegetables at 1 3 parts per mill ypothesis test is to be performed to decide whether the mean cadmium level in a certain mushroom i s not equal to the government s recommended limit Complete parts a through c below Determine the null hypothesis toi ppm Type an integer or a decimal Do not round