Podcast
Questions and Answers
What is the purpose of hypothesis testing in statistics?
What is the purpose of hypothesis testing in statistics?
- To make decisions about the population parameters based on sample data (correct)
- To determine the null hypothesis
- To collect population data
- To make assumptions about the sample data
Which statement best describes the null hypothesis?
Which statement best describes the null hypothesis?
- It represents what the researcher is trying to find evidence for.
- It serves as the default or status quo assumption. (correct)
- It assumes a relationship between variables.
- It asserts a significant difference in the population.
What does the alternative hypothesis represent?
What does the alternative hypothesis represent?
- A default assumption
- A status quo assumption
- Opposite of the null hypothesis (correct)
- No effect or difference in the population
In hypothesis testing, what does H0 usually state?
In hypothesis testing, what does H0 usually state?
When conducting hypothesis testing, what does H1 represent?
When conducting hypothesis testing, what does H1 represent?
Which type of hypothesis asserts that there is no significant difference between groups being compared?
Which type of hypothesis asserts that there is no significant difference between groups being compared?
What does H0 assume about population parameters before any evidence is collected?
What does H0 assume about population parameters before any evidence is collected?
Which hypothesis asserts that there is a significant difference, effect, or relationship in the population?
Which hypothesis asserts that there is a significant difference, effect, or relationship in the population?
True or False: The null hypothesis always states a positive effect or change in the population.
True or False: The null hypothesis always states a positive effect or change in the population.
What happens to the null hypothesis if there is enough evidence to reject it?
What happens to the null hypothesis if there is enough evidence to reject it?
What is the purpose of the significance level in hypothesis testing?
What is the purpose of the significance level in hypothesis testing?
In a two-tailed test, how are the z-values that cut off the tails of the standard normal distribution determined?
In a two-tailed test, how are the z-values that cut off the tails of the standard normal distribution determined?
What is used instead of the population standard deviation in hypothesis testing when it is unknown?
What is used instead of the population standard deviation in hypothesis testing when it is unknown?
How are the degrees of freedom calculated in a hypothesis test for a population mean?
How are the degrees of freedom calculated in a hypothesis test for a population mean?
When does one reject the null hypothesis in a right-tailed test using the t-statistic?
When does one reject the null hypothesis in a right-tailed test using the t-statistic?
What distribution is used for testing hypotheses about a population variance?
What distribution is used for testing hypotheses about a population variance?
What step involves looking up critical t-values from a table in hypothesis testing for a population variance?
What step involves looking up critical t-values from a table in hypothesis testing for a population variance?
In a left-tailed test for a population variance, when is the null hypothesis rejected?
In a left-tailed test for a population variance, when is the null hypothesis rejected?
What step follows calculating the test statistic when using the t-distribution in hypothesis testing for a population mean?
What step follows calculating the test statistic when using the t-distribution in hypothesis testing for a population mean?
When determining whether to reject the null hypothesis in a two-tailed test with chi-square distribution, what condition indicates rejection?
When determining whether to reject the null hypothesis in a two-tailed test with chi-square distribution, what condition indicates rejection?
What is the purpose of hypothesis testing?
What is the purpose of hypothesis testing?
Which of the following is true about Type I error?
Which of the following is true about Type I error?
What does Type II error involve?
What does Type II error involve?
What is a common consequence of decreasing the probability of Type I error?
What is a common consequence of decreasing the probability of Type I error?
What does a lower beta level signify in hypothesis testing?
What does a lower beta level signify in hypothesis testing?
When conducting a two-tailed test for population mean using z-statistic, what does rejecting the null hypothesis indicate?
When conducting a two-tailed test for population mean using z-statistic, what does rejecting the null hypothesis indicate?
'Balancing Type I and Type II Errors' refers to what in hypothesis testing?
'Balancing Type I and Type II Errors' refers to what in hypothesis testing?
'Power of a test' in hypothesis testing refers to what?
'Power of a test' in hypothesis testing refers to what?
'Type I Error' is also known as what in statistical hypothesis testing?
'Type I Error' is also known as what in statistical hypothesis testing?
'Type II Error' is associated with which scenario in statistical hypothesis testing?
'Type II Error' is associated with which scenario in statistical hypothesis testing?
Flashcards are hidden until you start studying
