Statistics and Probability Quiz

What is the critical value for a right-tailed test with α=0.05?

• 1.96

• 2.576

• 1.645

• 2.33

In hypothesis testing, what is the term for the area that indicates you reject the null hypothesis?

• Rejection region

• Critical value

• Significance level

• Acceptance region

For a two-tailed test with n=16 and α=0.05, what is the critical value?

• ±1.645

• ±2.092

• ±2.145

• ±1.96

What is the rejection region for a left-tailed test with α=0.01?

• z ≤ -2.576

• z ≥ 2.576

• z ≤ -1.645

• z ≥ 1.645

In a right-tailed test, where does the rejection region lie?

• Both tails

• Center

• Right tail

• Left tail

What is the critical value for a two-tailed test with α=0.10?

• ±2.33

• ±1.645

• ±1.96

• ±2.576

If the population variance is unknown, which test statistic is used?

• Z-test

• F-test

• T-test

• Chi-square test

What is the level of significance commonly used in hypothesis testing?

• All of the above

• 0.05

• 0.01

• 0.10

In hypothesis testing, what does the critical value represent?

• The mean of the sample

• The sample size

• The point to compare with the test statistic

• The standard deviation

For a two-tailed test with n=10 and α=0.05, what is the critical t-value?

• ±2.262

• ±2.101

• ±1.645

• ±1.96