Lily posts two videos of her pets online. She tracks how many views each video gets in 1 hour. Lily's lizard video gets 4 views. Her ferret video gets 9 times as many views. How many more views does Lily's ferret video get than her lizard video?

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?