albino rats used to study the hormonal regulation of a metabolic pathway are injected with a drug that inhibits body synthesis of protein. usually, 4 out of 20 rats die from the drug before the experiment is over. this time round, 10 animals are treated with the drug. what is the probability that 5 of these animals will die before the experiment is over?
3 answers
0.2
0.0264
exactly 5, or at least 5?
3 answers