A score of 80, where the mean score of the sample data values is 30. What is the z-score?​

Which of the following would most likely cause a large number of density independent deaths in a population

Which organisims can cause diseases a. micro organisims b. multicellular organisnims c. both d. neither

When must a driver yield to a pedestrian? a. only when the pedestrian is in the roadway b. only when the pedestrian is in a designated crosswalk c. only when the pedestrian has a walk signal d. always