A dentist surveyed ten 9 year old patients to see How Many Teeth they have lost so far. The results were: 4, 3, 4, 8, 8, 12, 9, 6, 10, and 6. What is the range for this data set ?

Based on the graph, what is the initial value of the linear relationship? a coordinate plane is shown. a line passes through the y-axis at -2 and the x-axis at 3.

Add the fractions and simplify 1/2+ 1/3

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?