Question 37 The most common confidence level and corresponding z-score for marketing research is _______ O 95%, 1.96 O 95%, 2.58 O 99%, 1.96 O 99%, 2.58 1.5 pts Question 38 Which of the following is a response format? O Metric O Open-ended O Categorical O All of the above 1.5 pts hs 1.5 pts Question 39 The sample plan determines: O The accuracy of the sample results O The number of people to be included in the research sample h O The process used to select the types and number of people from the research population O The researcher's ability to validate the sample results