1. identify the null hypothesis for parts 1a and 1b:
a. cannabinoids can be transmitted from mother to young through the placenta and through marijuana and the pituitary cannabinoids, which are substances contained in the milk. suppose we conduct the following experiment on pregnant mice: we give one group of mice a dose of cannabinoids and keep another group as controls. we then evaluate the function of the pituitary gland in the offspring. a or b
a. cannabinoids do not affect pituitary of offspring
b. cannabinoids do affect pituitary of offspring
b. chemotherapy is standard treatment for a certain cancer. suppose we conduct a clinical trial to study the efficacy of supplementing the chemotherapy with immunotherapy (stimulation of the immune system). patients are given either chemotherapy or chemotherapy plus immunotherapy. a or b
a. immunotherapy does affect survival
b. immunotherapy is not effective in enhancing survival