Final Examination in Statistics and Probability

Front

The null and alternative hypothesis are statements about the significant difference between

Back

parameter and statistic

Front

Which of the following does not describe an alternative hypothesis?
It is a hypothesis that has a statement of equality.
It is a hypothesis that has a statement of inequality.
It states a specific difference between a parameter and a statistic.
It states that there is a difference between a parameter and a statistic.

Back

It is a hypothesis that has a statement of inequality.

Front

Which of the following does not describe a null hypothesis?
- It is denoted by Ho.
- It is the hypothesis to be tested.
- It has a statement of equality.
- It states a specific difference between a parameter and a statistic.

Back

It states a specific difference between a parameter and a statistic.

Front

What does level of significance mean in a hypothesis testing?

Back

Probability of rejecting the null hypothesis when it is true

Front

If the alternative hypothesis contains the symbol ">", where is the rejection region located?

Back

Right end tail region

Front

A teacher claims that the mean math score of all grade 11 students is 90. Where is the rejection region located?

Back

Each end tail regions

Front

What is the probability of rejecting the null hypothesis of a left-tailed test given the level of significance alpha=0.01?

Back

0.01

Front

Mr. Mojica claimed that his operators could finish their work in less than three hours. Which is the correct set of hypotheses to test his belief?

Back

Ho: u ≥ 3; Ha: u < 3

Front

A group of researchers wants to test the truth in the company's claim that the travel time from Magallanes to Manila takes an average of two hours. What are the possible Type I and Type II errors?

Back

Type I error will occur if the actual average travel time is two hours by Ho is rejected. Type II error will occur if the actual average travel time is not two hours but Ho is not rejected.

Front

What corresponding value will be calculated when the t-test statistic is computed? Options: Hypothesized population mean, Hypothesized sample mean, Standardized t-value, Standardized z-value

Back

Standardized t-value