Assume that each of the following conclusions represents an error in hypothesis testing. Indicate whether each of the statements is a Type I or II error.
A. Based on the data, the null hypothesis is rejected.
B. There is no significant difference in quality of care between nurses who work 8 and 12 hour shifts.
C. There is a significant difference between right-handers and left-handers in their ability to perform a spatial task.
D. The researcher fails to reject the null hypothesis based on these data.