Emily conducted a survey to find out the amount of time high schoolers spend surfing the Internet. From the data collected, the range of time spent was 2 hours. What does this range say about the data?

For which intervals is the function positive? select each correct answer. [-6, -4) (6, 8] (-4, 0) (0, 6)

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12

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?