A utility company hires pollsters to knock on random doors in different parts of town to survey residents about the cost of their electric bill. Would this study be biased? Why or why not?
No, it is not biased. All residents of the town will have the opportunity to respond.
Yes, it is biased. Some of the residents who are surveyed may not want to respond to someone who knocks at
their
No, it is not biased. All residents who are surveyed will want to respond.
door.
O Yes, it is biased. Only certain parts of the town were surveyed.

B: Yes, it is biased. Some of the residents who are surveyed may not want to respond to someone who knocks at their door.

Step-by-step explanation:

edg2020

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."

answer: -0.5 would be the most likley outcome

step-by-step explanation: