Mrs. Sheridan drives to her office one morning . After she leaves her house, she drives at a constant speed until she reaches a stop light. She waits at the stop light and
then continues at the same speed as before until she reaches her office. After work,
she drives straight home without stopping.
Which is the graph of Mrs. Sheridan's distance from her office?
А
Distance
from office
Time
Distance
from office
c
Time
Distance
from office
U
Time
Distance
from office
D

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

X+ y = 5 ; x - y =3 solve using linear combination

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables