Question

I took an education class that taught true or false questions shouldn’t be used on quizzes or tests because the student can guess and still have a 50% chance of getting the correct answer. Was my professor right? If Joe gets 9 true or false questions correct on a 10 question stats quiz, is this evidence that Joe understands the content of the quiz?

1. What are the observational units? How many are there?

2. What is the variable? What are the outcomes?

3. State the null and alternative hypothesis. Null Hypothesis: Alternative Hypothesis:

4. Using the 3-S Process a. What is the statistic? b. Explain how you would carry out the simulation if you had a coin. c. Explain how you would assess the strength of evidence

Answer 1

Q.1

True or false question is observational unit. There are 10 observational units.

Q.2

Number of correct question is the variable. It can take values 0, 1, 2, ------, 10

Q.3

Hypothesis:

Que.4

Test statistic,

Critical value = 1.645

Since calculated Z is greater than critical value we reject null hypothesis and conclude that Joe understands the content of the quiz. He didn't obtain score by chance.