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ryzh [129]
3 years ago
9

What value has a z-score of -0.67, if the mean is 18 and the standard deviation is 1.68?

Mathematics
1 answer:
uranmaximum [27]3 years ago
7 0
The data point is 1.6 standard deviations above the mean.
Step-by-step explanation:
Z-score
It is the number of standard deviations from the mean that a data point is. It's a measure of how many standard deviations below or above the population mean a raw score is.
A Z-score is also known as a standard score and it can be placed on a normal distribution curve.
As in this case the Z-score is +1.6, so it means the data point is 1.6 standard deviations above the mean. Hope this helps I am kinda knew to this so I hope I helped you
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7x+2y=16
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Answer: you have too Pepe in boooooty

Step-by-step explanation:

3 0
3 years ago
Which term describes the slope of the line below?
kiruha [24]

Answer:

undefined

Step-by-step explanation:

3 0
3 years ago
Please help me guys ​
wariber [46]

Step-by-step explanation:

midpoint : it is the point in the middle marking half of the total distance.

therefore,

1)

EV = LE = LV/2

10 = 5m

m = 2

2)

LR = RO = LO/2

n + 4 = 12

n = 8

3)

LER and LVO are similar triangles. that means they have the same angles, and the ratio of one corresponding pair of lines or sides between both triangles is the same for all corresponding line pairs.

we know e.g. LE/LV = 1/2.

the same ratio applies then to ER/VO = 1/2 = 18/20p.

18/20p = 1/2

18 = 20p/2

2×18 = 20p

36 = 20p

p = 36/20 = 9/5 = 1.88888888888...

4)

VL = 2×EL = 2×10 = 20

5)

LO = 2×RO = 2×12 = 24

6)

as we have already calculated for 3) :

VO = 36

7)

36 + 20 + 24 = 80

8)

10 + 12 + 18 = 40

9)

remember, the and angles in similar triangles.

LVO = 52°

10)

all angles around a single point in one side of a line are together 180°.

in this case there are 2 angles around E : LER and VER.

VER = 180 - LER = 180 - 52 = 128°

4 0
2 years ago
Read 2 more answers
-4x-2y=30<br> 1/3y=7/3x+5/3<br> we are supposed to use substitution when solving
seropon [69]

Answer:

The solution set is (-20/9, -95/9)

Step-by-step explanation:

To solve using the substitution method, start by solving the second equation for y.

1/3y = 7/3x + 5/3

y = 7x + 5

Now that we have this, we can plug it in for y in the first equation. Then we can solve for x.

-4x - 2(7x + 5) = 30

-4x - 14x - 10 = 30

-18x - 10 = 30

-18x = 40

x = -20/9

Now that we have the value of x, we can solve for y by inputting the x value into either equation.

-4x - 2y = 30

-4(-20/9) - 2y = 30

80/9 - 2y = 30

80/9 - 2y = 270/9

-2y = 190/9

y  = -95/9

4 0
3 years ago
If a rectangle has a perimeter of 56 inches and a width of 8 inches,what is the perimeter
romanna [79]

Answer:

<h2>192 inches ²</h2>

Step-by-step explanation:

P= (l+w)

56 = 2(l+8)

56=2l+8

56-8= 2l

48=2l

Length=24

Area = ?

A = l×w

A=24×8

Area= 192inches²

4 0
3 years ago
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