A study looked at acupressure and the sleep quality of psychogeriatric patients. Selected data are as follows: Pretest M(SD) Posttest M(SD) t p Sleep latency (min) 34.93 (4.46) 30.07 (4.80) 3.61** 0.001 (Lu, Lin, Chen, Tsang, & Su, 2013, p. 134). What do the data mean? Select all that apply. Group of answer choices The p-value indicates the probability of a type II error. The difference between the means is statistically significant. The p-value indicates the probability of a type I error. There is a difference in the means (M) and standard deviations (SDs) between the pre- and posttests. The difference between the means is not statistically significant