Answer:
a) Scores of 2 and higher are significantly high
b) Scores of -2 and lower are significantly low
c) Scores between -2 and 2 are not significant.
Step-by-step explanation:
Mean = 0
Standard deviation = 1
a. significantly high (or at least 2 standard deviations above the mean).
2 standard deviations above the mean is:
0 + 1*2 = 2
So scores of 2 and higher are significantly high
b. significantly low (or at least 2 standard deviations below the mean).
2 standard deviations below the mean is:
0 - 1*2 = -2
So scores of -2 and lower are significantly low
c. not significant (or less than 2 standard deviations away from the mean).
2 standard deviations above the mean is:
0 + 1*2 = 2
2 standard deviations below the mean is:
0 - 1*2 = -2
So scores between -2 and 2 are not significant.
130 is the answer. hope this helps
Hi there!
<em><u>Answer:</u></em>
<em><u>t<1</u></em>
<em><u>*The answer must have a positive sign.*</u></em>
Step-by-step explanation:
First, you add by 3 from both sides of an equation.
And then, you add/subtract from left too right.
It change negative to positive sign.
<em><u>Final answer is t<1</u></em>
Hope this helps!
-Charlie
Have a nice day! :)
:D
Hello, sorry if this seems a bit odd, it’s a common method though. Hope you can understand this. Thanks
Set both y’s equal to each other.
2x-1 = 3x+4
2x-3x = 4-(-1)
-x = 5
x = -5
Plug x = -5 into any of the given equation. I will use the first one as an example.
y = 2x-1
y = 2(-5)-1
y = -11
Answer: (-5, -11)
