Skip to Content# Introducing new Paper mode

Back

Build your own quiz

Browse from millions of quizzes

No student devices needed. Know more

13 questions

Show Answers

See Preview

- 1. Multiple Choice30 seconds1 pt
Which of the following best describes a Type I error?

The null is true, but we mistakenly reject it.

The null is false and we reject it.

The null is false, but we fail to reject it.

The null is true but we fail to reject it.

The null is true, and we fail to reject it.

- 2. Multiple Choice1.5 minutes1 ptTo test a claim about a mean, when the population standard deviation is unknown we use:z proceduresPythagorean Theoremt proceduresnp > 10 and n(1-p) > 10
- 3. Multiple Choice1.5 minutes1 pt
The null hypothesis is represented by:

Ha

Ho

t*

HP

μ

- 4. Multiple Choice1.5 minutes1 pt
The null hypothesis always contains a(an):

< or >

=

>

= or >

≠

- 5. Multiple Choice1.5 minutes1 ptWhen p-value is greater than alpha we:Accept HoAccept HaFail to reject HoReject Ho
- 6. Multiple Choice1.5 minutes1 ptMargin of error equals:Critical Value ∗ standard Errorz*1.96Standard Error
- 7. Multiple Choice1.5 minutes1 ptWhat is the Power of a test?A strong forceThe probability that we correctly reject a false null.The probability that we correctly accept a true null.How tough it is.
- 8. Multiple Choice1.5 minutes1 pt
Which of the following best describes a type II error?

The null is true, but we mistakenly reject it.

The null is false and we reject it.

The null is false, but we fail to reject it.

The null is true but we fail to reject it.

Te null is false, and we reject it.

- 9. Multiple Choice1.5 minutes1 ptWhat does it mean when a test is statistically significant?it has reached alpha level statusthe test statistic had a P-value higher than the alpha levelthe test statistic had a P-value lower than the alpha levelit is important in practical terms
- 10. Multiple Choice1.5 minutes1 ptHow can you reduce both Type I and Type II errors?it can't be reducedredo the testsincrease the sample sizetamper with the data
- 11. Multiple Choice1.5 minutes1 pt
When conducting a significance test for the difference in proportions, why do we pool the data when finding standard error?

Because we like to swim

Because we assume p1 = p2 in Ho

Because the sample sizes are always equal

To be safe and make sure we don't underestimate the standard error

Because we don't the standard deviation.

- 12. Multiple Choice1.5 minutes1 ptWhen creating a confidence interval for the difference of 2 proportions, we pool the samples when finding standard errorTrueFalse
- 13. Multiple Choice1.5 minutes1 ptWhat do we use to estimate unknown parameters?Hypothesis TestConfidence IntervalTrig IdentityGuess and check
- Answer choicesTagsAnswer choicesTags
Explore all questions with a free account

Already have an account?