Ihave 2 questions.
1)of the 100 students enrolled at the dance studio, 50 take ballet and 24 take
tap dancing. eight of the students who take ballet also take tap dancing. if
a student at the studio is chosen at random, find the probability that they take ballet, if it is known that they do not take tap dancing.

2)a shape is randomly selected from the following quadrilaterals: parallelogram,
rhombus, rectangle, square, and trapezoid. what is the probability that it has four right angles, given that it has four congruent sides? (is this dependent? )

6.9

step-by-step explanation:

simple math really

6 1/2 times 0.6 = 3.9

but if you are just doing 6 and not 6 1/2 then the answer is 3.6

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.

step-by-step explanation:

never fear papaguy is here

answer