Statistics Quiz

According to Republic Act 8293, section 176, what is required for the exploitation of a work of the Government of the Philippines for profit?

• Approval from the government agency or office

• No approval needed

• Approval from the President of the Philippines

• Approval from the copyright holders

In Case 3, how do you find the area between two z-scores?

• Add the z-scores

• Divide the z-scores

• Subtract the z-scores

• Multiply the z-scores

What is the purpose of formulating null and alternative hypotheses?

• To confuse the readers

• To evaluate the value of a parameter

• To complicate statistical analysis

• To hide the results

When is a one-tailed test used in hypothesis testing?

• When the alternative hypothesis specifies a direction

• When the null hypothesis is complex

• When the sample size is small

• When the population is not normally distributed

What is the appropriate test statistic to use when the population standard deviation is known?

• Z-test

• T-test

• Y-test

• X-test

What is the critical value used in hypothesis testing?

• The standard deviation of the population

• The mean of the sample data

• A random value chosen by the researcher

• A point on the test distribution compared to the test statistic

In a left-tailed test, what does the alternative hypothesis state?

• The true value of the parameter is not equal to the null hypothesis claims

• The true value of the parameter is less than the null hypothesis claims

• The true value of the parameter is greater than the null hypothesis claims

• The true value of the parameter is equal to the null hypothesis claims

When using the t-distribution table, how do you find the critical values?

• Calculate the variance and standard deviation

• Look at the mean and median values

• Use the sample size and population standard deviation

• Identify the level of significance and degrees of freedom

What is the critical region also known as?

• Acceptance region

• Rejection region

• Confidence region

• Null region

When determining the critical region for a normal distribution with a one-tailed test and α = 0.10, what is the critical value?

• 2.33

• 1.96

• 1.645

• 1.28