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zzz [600]
3 years ago
9

Need help with z-scores

Mathematics
2 answers:
zysi [14]3 years ago
6 0

hope this helps b.0.8937

ira [324]3 years ago
5 0

You need to look up the areas corresponding to the z-scores on a Standard Normal Distribution table.  Using a table which gives areas to the LEFT of the z-score  we work out the above shaded region area as follows

area = area to left for  z score 0.85 - area to left for z score -1.2

= 0.8023 -  0.1151 = 0.6827

Its Option D.

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Can someone help me simplify this answer I keep getting it wrong?
ZanzabumX [31]

The answer is -8

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that is how I found my answer.

8 0
3 years ago
You guys are life savers but does anyone know the answers to these questions? I’m so confused rn
timofeeve [1]

Answer:

The third choice

Step-by-step explanation:

We need to find the slope and y-intercept of the line and then put it into y = mx = b form. To find the slope, pick a point on the line; I will use (-2, 5); count how many units up you need to go to get to the next point on the line, which in this case it would be 3. The count how many to the right or left you would need to go, which is 1 to the left. Moving left means a negative, so it is -1. Your slope fraction would be \frac{3}{-1} , since slope is rise over run. You can sub this fraction in for m in y = mx + b, which will give you a revised equation of y = -3x = b. To find the y intercept, or b, just find the point where the line crosses the y-axis, which is -1. So, the equation is now y = -3x - 1.The correct answer is third choice.

6 0
3 years ago
What’s 690 divided by 4???
poizon [28]
172.5! hope this helps
6 0
2 years ago
Read 2 more answers
Which expression is equivalent to a^3 • b^3 • a^-3 • b?
Dmitry [639]
The answer is B! b^4. If we examine the expression given, we have a^3 * b^3 * a^-3 * b= a^3/a^3 * b^3 * b = 1 * b^4

Hope this helps! Any questions please feel free to ask!!

Thank you!!
3 0
3 years ago
Write the decimal 5.16 in decimal word form
VladimirAG [237]
Five and sixteen tenths, or five point sixteen
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3 years ago
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