Exevcue 9-2 f.212-213 #3 (7 furd and descrile emors irite each ne in to preof sommer, 20/9 logic final exam 2 exevcue 9-2 #s find and dercrle tt evrors write cach iue n proo p. 213

The value √10 and √15 are plotted on the number line

Which representation has a constant of variation of -2.5

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?