Number 7: B=16. Number 8: A=30. Number 9: A=0
Answer:
b. To increase the accuracy of the research and prevent skewness in the idea.
Step-by-step explanation:
Random assignment ensures that any difference between groups recorded at the end of an experiment can be attributed to the experimental procedures. It refers to how you arrange the participants into required groups (different treatment and control groups). In the case of non-random assignment, the two major problems are generalisation of results and bias, which could lead to skewness in the idea of the experiment.
One of the importance of random assignment in this given experiment is to increase the accuracy of the research and prevent skewness in the idea.
Answer:
600 ft
Step-by-step explanation:
Alice's Average Speed=280 ft/min
Dave's Average Speed=320 ft/min.
Distance = Average Speed X Time
In 1 minute, their distances from their starting point is determined below.
Alice's Distance=280 X 1=280ft
Dave's Distance= 320 X 1=320ft
Since they walk in opposite direction, their distance from each other will be the sum of their distances from the starting point.
Distance of Alice from Dave=280+320=600 ft
In 1 minute, they were 600 ft apart.
Answer:
If the soccer coach wants to know how many students made 15 or more goals then she should use the histogram because it is split in to different ranges so it’s easy for her to know how many students made 15 or more goals. If the soccer coach wants to know the least number of goals made she should use the dot plot because that shows the specific number of goals each student made while the histogram only gives an range.
