hypothesis testing

2. When the value of parameter has significant difference with the hypothesized value, then it is called _____________.

• one-tailed

• two-tailed

• null hypothesis

• alternative hypothesis

3. The sign of the alternative hypothesis in a left-tailed test is always_________.

• equal

• less than

• not equal

• greater than

5. What kind of hypothesis is illustrated below? The mean score of all Grade 11 students is higher than 75.

• one-tailed

• two-tailed

• null hypothesis

• alternative hypothesis

9. In a sample n=100 selected from a normal population 𝑥̅= 56 and 𝑠 = 12, what statistical test is applicable?

• t-test

• z-test

• left-tailed

• two-tailed

3. The sign of the alternative hypothesis in a left-tailed test is always_________.

• equal

• less than

• not equal

• greater than

5. What kind of hypothesis is illustrated below? The mean score of all Grade 11 students is higher than 75.

• one-tailed

• two-tailed

• null hypothesis

• alternative hypothesis

9. In a sample n=100 selected from a normal population 𝑥̅= 56 and 𝑠 = 12, what statistical test is applicable?

• t-test

• z-test

• left-tailed

• two-tailed

It is also the probability of committing an incorrect decision about the null hypothesis.

• Level of error

• Level of hypothesis

• Level of acceptance

• Level of significance

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

• 𝐻𝑎= 100

• 𝐻𝑎≠ 100

• 𝐻𝑎 > 100

• 𝐻𝑎 < 100

In a one-tailed test, in which the critical value listed below will the computed z of 2.313 fall in the acceptance region?

• 1.383

• 1.533

• 2.228

• 2.365