Patients being treated with a particular drug run the risk of being allergic to the drug. a patient's reaction to the drug is characterized by doctors as being hyperallergic, allergic, mildly allergic or not allergic, and these have probability values of 0.12, 0.28, 0.33, and 0.27 respectively. suppose nine people are administered the drug and assume that one patient's reaction is independent of another patient's. (a) find the probability that two patients exhibit no reaction. (b) find the probability that no patients are hypoallergenic, one patient is allergic, four patients are mildly allergic, and four patients exhibit no reaction.

b. regulated is the actual answer to your question.

explanation:

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation:

the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.