Guideline Eliminator Sticky Notes
Formulas
Graphing
A company that cleans carpets charges its customers a fixed amount
for supplies plus an additional amount per hour of cleaning. The graph
models the linear relationship between the total amount charged and
the number of hours of cleaning.
Carpet Cleaning
Charged (dollars)
200
180
160
140
120

Acompany is testing in comparing to lightbulb designs the box plot shows the number of hours that each lightbulb design last before burning out which statement is best supported by the information of the plot

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?

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?