Statistics and Probability Reviewer

This refers to an idea or explanation for something that is based on known facts but not yet been proved to be true.

• A. decision

• B. error

• C. hypothesis

• D. interpretation

What mathematical model is appropriate for decision-making in statistics?

• A. bar graph

• B. histogram

• C. normal curve

• D. z-table

Which of the following describes an alternative hypothesis using right-tailed test?

• A. 𝐻𝑎: 𝜇 < 50 𝑦𝑒𝑎𝑟𝑠 𝑜𝑙𝑑

• B. 𝐻𝑎: 𝜇 ≠ 50 𝑦𝑒𝑎𝑟𝑠 𝑜𝑙𝑑

• C. 𝐻𝑎: 𝜇 > 50 𝑦𝑒𝑎𝑟𝑠 𝑜𝑙𝑑

• D. 𝐻𝑎: 𝜇 = 50 𝑦𝑒𝑎𝑟𝑠 𝑜𝑙𝑑

The researcher wants to test the significant difference between the mean score of Grade 11 students of HCCS and ESPS in their third quarter examination in Statistics and Probability. What would be the null hypothesis?

• A. 𝐻o: μ1= μ2

• B. 𝐻o: μ1≠ μ2

• C. 𝐻o: μ1≥ μ2

• D. 𝐻o: μ1≤ μ2

Which of the following is NOT TRUE about null hypothesis?

I. It is denoted by 𝐻o.

II. It always shows equality.

III. Uses the symbols ≠, ≥, and ≤.

IV. It is the hypothesis that claims to be true.

• A. I, II

• B. I, II, IV

• C. III only

• D. I, II, III, IV

Which of the following does not belong to the common level of significance?

• A. 0.01

• B. 0.05

• C. 0.10

• D. 0.5

Which of the following symbol does not belong to the group?

• =

• ≠

• >

• <

Which of the following is the correct process in hypothesis testing?

                        I.  Determine the level of significance.

                        II. Make a decision and draw conclusion.

                        III. Formulate the null and alternative hypotheses.

                        IV. Calculate the test statistics and identify the rejection region.

• A. I, II, III, IV   

• B. III, I, IV, II

• C. III, IV, I, II

• D. IV, III, II, I

It pertains to the set of all values for which the null hypothesis will be rejected.

• hypothesis test

• level of significance

• errors in hypothesis testing

• rejection region

Which of the following hypothesis test is appropriate in the given graph?

• left-tailed

• right-tailed

• two-tailed

• cannot be tested