Atest consists of 10 true/false questions. to pass the test a student must answer at least 6 questions correctly. if a student guesses on each question, what is the probability that the student will pass the test? round to three decimal places. a. 0.205 b. 0.172 c. 0.828 d. 0.377

 D. 0.377

Step-by-step explanation:

Given : The choices of answers for each question =2

Then , the probability of choosing a correct option : p= 0.5

Total number of question : n=10

Also, to pass the test a student must answer at least 6 questions correctly.

Let x be the random variable that represents the number of questions answered.

Using binomial probability formula, to find the probability of getting success in x trials.

If a student guesses on each question, then s the probability that the student will pass the test :-

Hence, the probability that the student will pass the test = 0.377

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.

$9.41

step-by-step explanation: