ALL ABOUT BIO STATISTICS

1. The heights 1000 students enrolled have a mean of 66 inches with a standard deviation of 3 inches. ASSuming that the heights are normally distributed: a. What is the probability that a randomly selected student has a height below 62 inches? b. What is the probability that a randomly selected student has a height greater than 70 inches? c. How many of the students have heights between 62 inches and 70 inches? d. What is the probability that a randomly selected student has a height exactly 62 inches? 2. The probability of recovery from eosinophilic meningitis after treatment with albendazole is 0.75. From a sample of 10 infected patients who were treated with albendazole, nd the probability that the number of patients who will recover is: 1. Six 2. Atleast seven 3. No more than five 3. A large area of land was sprayed with an insecticide. Later the area was examined for live insects by randomly selecting several lsq.m plots and counting the number of live insects per square. Past Experience has shown the average number of live insects per square meter after spraying to be 1.5. Find the probability that a selected square meter will contain: 1. Exactly one live insect 2. No live insects 3. One or more live insects 4. In a certain population of mussels. Mytiius eduiis, 2% of the individuals are infected with intestinal parasite. A marine biologist plans to examine 100 randomly chosen mussels from the population. What is the probability that exactly ve of the sampled mussels will be infected