Question 28 (5 points) An experiment done in such a way that neither the subjects nor the researchers know which subjects are in the treatments group and which are in the control group is called: 0 Double blind. O Double jeopardy. 0 Double negative. 0 Single blind. O Double sided. Question 29 (5 points) Data on pulse rates was collected from a random sample of 100 students from ETSU. We find a 95% confidence interval for mean pulse rate to be (65, 72). Which of the following is the correct interpretation of this interval? 0 We are 95% sure that all students will have pulse rates between 65 and 72 beats per minute. 0 We are 95% sure that the mean pulse rate for all US college students is between 65 and 72 beats per minute. 0 We are 95% confident that the mean pulse rate for this sample of students will fall between 65 and 72 beats per minute. 0 The probability is .95 that the mean is in this interval. 0 We are 95% confident that the mean pulse rate of all ETSU students is between 65 and 72 beats per minute