t-student probability (p) look-up 1.070 df 19 P (one tail) 0.149 p (two tails) 0.298 P (cumulative) 0.851 t-student look-up from p P (right tail) 0.010 df 18 t (right tail) 2.552 P (left tail) 0.010 df 18 t (left tail) -2.552 p (two tails) 0.010 df 18 t (two tails) 2.8782. Meon confidence intervals (6 unknown) F Height. A sample of 20 students show a mean height of 169 cm with a standard deviation of 18.5 cm. Based on this sample, what is the probability that a sample mean is smaller than 160 cm? And larger than 177 cm? E2213 CANVAS Download the tstudentlookup le from the LEARNING RESOURCES > Excel demos page and answer V __ _ _ . V this question via the Lecture 8 - :2 it Within-lecture quiz! mum Imus mum