(Hi can you help I'm taking a math quiz. And don't worry I'll give brainliest) Seventy parents showed up for a parent meeting at school. Mrs. Quinn set up 12 tables in the library for the meeting. The graph below displays this information.

Find the value of x that will make l ll m

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

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?