QUESTION 4 1 points Save Answer The purpose of this test is to compare the observed values in a dataset to the expected values that you would see if the null hypothesis is true. The two most commonly used versions of this test are goodness of fit and test of independence. 0 Chi square 0 Student's t-test 0 Regression analysis 0 None of these QUESTION 5 1 points Save Answer A drug company wants to test a new cancer drug to find out if it improves life expectancy. The control group showed an average life expectancy of +5 years, while the group taking the new drug had a life expectancy of +6 years. The company determines that the drug probably works, but the researchers must insure their findings were not due to a fluke. To test this, researchers would use a 0 Correlation Analysis 0 Student's t-test 0 Regression analysis 0 All of these