20250519 9.3: Independent Samples for Two Means
Source:
9.3: Independent Samples for Two Means
Example 9.3.1 hypothesis test for two means
The cholesterol level of patients who had heart attacks was measured two days after the heart attack. The researchers want to see if patients who have heart attacks have higher cholesterol levels over healthy people, so they also measured the cholesterol level of healthy adults who show no signs of heart disease. The data is in Table 9.3.1 ("Cholesterol levels after," 2013). Do the data show that people who have had heart attacks have higher cholesterol levels over patients that have not had heart attacks? Test at the 1% level.
Using an online application (tool):
Input the data needed based on the data from the given (All screenshots are taken by me-using the mentioned tool)
The result I got:
My google sheet (not for public)
