Answer:
One possible confound for the experiment is the attitude of the research assistants.
Step-by-step explanation:
A confounder simply means a variable that has impact in influencing both the dependent variable and independent variable, causing a spurious association.
So, we can conclude that the attitudes of the research assistants have positive and negative impacts in determining the reactions of both participants in the experiment.
The rudeness of a research assistant will negatively impact the response of the participant allocated to him/her.
The calmness of the other research assistant will positively impact the response of the participant allocated to him/her.
Answer:
option D. (-3,21),(-2,16),(0,6),(1,1),(2,-4)
Step-by-step explanation:
we have

we know that
To find the values of y substitute each value of x in the equation
so
1) For 

2) For 

3) For 

4) For 

5) For 

Answer: If 169 meters is the longest length, then 154 meters is the shortest length.
Explanation:
The given figure show a box plot.
In a box plot the box is lies between the first quartile Q₁ and third quartile Q₃ . The line between Q₁ and Q₃ represent the median and Q₁ is always less than Q₃.
The end point of the line left side of the box represents the minimum value of the data and the end point of the line right side of the box represents the maximum value of the data.
From the figure we can say that,



Minimum value is 154 and the maximum value is 169.
Since it is given that the 169 meters is the longest length then the shortest length is 154.
Answer:sedimentary
Step-by-step explanation: