I’m working on a statistics discussion question and need guidance to help me understand better.
Week 4 Discussion: Hypothesis Testing
This week, we are looking at inferences about samples taken from the population using hypothesis testing. We study several different hypothesis tests in the class, including normal distribution, t-Test, Chi-Square equal frequencies, Chi-Square unequal frequencies, Chi-Square independence, and Analysis of Variance (ANOVA). In this discussion we will perform a t test. A t-test is used when you have a normal distribution, a quantitative variable, and the population mean is not known.
To prepare for this Discussion:
- Review the Week 4 Discussion resources.
- Look at the data set that you used in Discussion 1 or 2. In order to do this weeks Discussion, you will need to have one quantitative variable that you want to test against some widely accepted value.
Example: I will go back to the original data set I used in the Week 1 Discussion. I want to test my data against the widely accepted mean of systolic blood pressure equal to 120. I claim that the systolic pressure is greater than 120. My hypotheses would be Null: the mean systolic pressure equals 120.
Alternative: the mean systolic pressure is greater than 120.
- I chose 120 as my value to test against because that is the recommended value that your doctor would expect.