Aconsumer advocate conducted a test of a popular gasoline additive that was claimed to increase gasoline mileage in cars. for a sample of 15 cars they used the additive and determined how many more miles the car could drive when the additive was added to the gas tank.

for example, a positive 10 would mean that the car drove 10 more miles with the additive whereas a -3 would mean that the car drove 3 fewer miles with the additive.
the table shows a few data values (of how many more miles a car could drive with the additive) along with some summary statistics.

are there any striking deviations?
a) -15
b) -2
c) 7
d) 8
gas additive a
additive values below q1 q1 median q3 values above q3
a -15, -4, -2 1 3 4 5, 7, 8

the things above are just the table.

The biologist has a second culture to examine. she knows that the population of the culture doubles every 15 minutes. after 1 hour and 15 minutes, her assistant found that 80,000 bacteria were present. a) what was the size of the initial population? b) predict the size of the culture at t=3 hours. what was the size of the population at 40 minutes? explain and justify your answers. c) create a graph of the population as a function of time. find an equation that can be used to predict the size of the population at any time t. d) examine the rate at which the bacteria culture is growing. how fast is the culture growing after 1 hour? after 1.5 hours? after 2 hours? use a time interval of h = 0.01 hours to estimate these rates. interpret these rates in terms of the context of the problem situation. how do these three rates compare?

Y=x+2 4x+3y= -36 system of equation

Determine whether the data described are qualitative or quantitative and give their level of measurement if the data are quantitative, state whether they are continuous or discrete. soft drink sizes: small, medium, large. oa. qualitative, nominal o b. qualitative, ordinal- o c. quantitative, ordinal, discrete o d. quantitative, ordinal