The mathematics department of a college has 1515 male professors, 77 female professors, 1414 male teaching assistants, and 1414 female teaching assistants. if a person is selected at random from the group, find the probability that the selected person is a professor or a male.

probability that the selected person is a professor or a male.=

Step-by-step explanation:

The mathematics department of a college has 15 male professors, 7 female professors, 14 male teaching assistants, and 14 female teaching assistants

number of professors = 15 male + 7 female = 22

number of male = 15 male professor + 14 male assistants= 29 male

number of professors are male = 15

selected person is professor or a male = professors + male - number of male professors= 22+29-15= 36

Total persons = 15+ 7 +14+14= 50

probability that the selected person is a professor or a male.=

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.

hi there!

the answer will be d: 2