Basics of Hypothesis Testing

What is the primary focus of hypothesis testing?

• To determine the standard deviation

• To calculate the mean of a sample

• To test a claim about a population

• To prove a hypothesis

Which of the following is always denoted by H0?

• Population Proportion

• Sample Mean

• Null Hypothesis

• Alternative Hypothesis

What symbol is commonly used to denote the alternative hypothesis?

• H0

• Mu

• H1 or Ha

• P

In a two-tailed test, what is the alternative hypothesis?

• The parameter is not equal to a certain value

• The parameter is greater than a certain value

• The parameter is equal to a certain value

• The parameter is less than a certain value

Which type of test would you use if the alternative hypothesis states that the parameter is less than a certain value?

• Two-tailed test

• Left-tailed test

• Right-tailed test

• None of the above

What is the formula for calculating the test statistic for a proportion?

• (Sample Proportion - Population Proportion) / (Standard Deviation / sqrt(n))

• (Sample Mean - Population Mean) / (Standard Deviation / sqrt(n))

• (Sample Mean - Population Mean) / sqrt((P * Q) / n)

• (Sample Proportion - Population Proportion) / sqrt((P * Q) / n)

Tags

NGSS.HS-LS3-3

NGSS.HS-LS4-3

When calculating the test statistic for means, what determines whether you use the z or t distribution?

• Sample mean

• Sample size

• Population mean

• Standard deviation of the population

What is the significance level denoted by?

• Delta

• Alpha

• Gamma

• Beta

What does a p-value represent in hypothesis testing?

• The critical value

• The probability of obtaining a test statistic at least as extreme as the one observed

• The sample mean

• The probability of the null hypothesis being true

When do we reject the null hypothesis?

• When the p-value is less than the significance level

• When the test statistic is positive

• When the p-value is greater than the significance level

• When the test statistic is negative