3) a study of posttreatment behavior of a large number of drug abusers suggests that the likelihood of conviction within a 2-year period after treatment may depend on the offenders education. the proportions of the total number of cases falling in four education-conviction categories is tabled below. status within 2 years after treatment education convicted not convicted totals 10 years or more 0.10 0.30 0.40 9 years or less 0.27 0.33 0.60 totals 0.37 0.63 1.00 suppose a single offender is selected from the treatment program. define the events a: the offender has 10 or more years of education. b: the offender is convicted within 2 years after treatment. find a) p(a) c) p(ab) d) p(a ∪ b) f) p(a ∪ b) h) p(a|b)

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.

6 on both sides and twelve on the top and the bottom

step-by-step explanation:

if the angular bisector of an triangle bisects the opposite side, prove that the other two sides are equal.