17. 18. 19. Suppose a researcher is conducting a two-way Chi-square test to evaluate the relationship between gender and preference among 4 different designs for a new automobile. Each participant in a sample of 40 men and 40 women selects a favorite design from the 4 choices. If the researcher obtains a calculated value of Chi-square of 9.68, what is the appropriate statistical decision for the test? A. Reject the null hypothesis at the .05 level of significance but fail to reject the null hypothesis at the .01 level of significance B. Fail to reject the null hypothesis at the .05 level of significance and at the .01 level of significance C. Reject the null hypothesis at the .05 level of significance and at the .01 level of significance D. Impossible to answer without additional information Suppose a researcher conducts a study on the relationship between hours of exercise per week and grade point average at a certain university. To be sure to get an equal number of men and women in the sample, the researcher divides the population into men and women and then randomly selects 200 men and 200 women for the study. What sampling technique did the researcher use? Simple Random Sampling Proportional Stratified Random Sampling Stratified Random Sampling Convenience Sampling 909"? In general, the larger the sample, the greater the sampling error