Help pleasee In this rectangular box, EF = 16, FD = 5, and DB = 30. Find A F.

A. 5√37
B. 34
C. √1.181
D. √1.281

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?