Louise is walking 12 miles to raise funds for a local cause. if she has completed 3/4 of the distance, how many miles has she walked? a. 6 b. 9 c. 8 d. 7

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?