Adjust to compatible numbers that count by 25s, and then subtract to estimate the difference. 252 - 23 =

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?

Is it greater than or less than7*3_9*2

25 ! i need asap! ! ill mark brainliest!