An observational study has a control group, a placebo group, a treatment group, and a treatment A) True
B) False
C) Both
D) Unable to answer with the data given

What is the upper quartile in the box plot?

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)

Triangles abd and ace are similar right triangles. witch ratio best explains why the slope of ab is the same as the slope of ac?