Brianna received an overall IQ score of 117 on the Wechsler Scale. This means that Brianna has scored approximately____________ standard deviation above the mean IQ score of ____________. A. 2; 90 B. 1; 110 C. 2; 75 D. 1; 100

Answers

Answer 1

Using the normal distribution, it is found that the correct option is:

D. 1; 100

In a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

It measures how many standard deviations the measure is from the mean.

In this problem:

The mean on the Wechsler Scale is of 100, hence [tex]\mu = 100[/tex].The standard deviation is of 17, hence [tex]\sigma = 17[/tex].Brianna had an score of 117, hence [tex]X = 117[/tex]

Then:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{117 - 100}{17}[/tex]

[tex]Z = 1[/tex]

Hence, the option d is correct.

To learn more about the normal distribution, you can check https://brainly.com/question/24663213


Related Questions

PLEASE HURRY 40 POINTS

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Answer:

3√5

Step-by-step explanation:

Hope this helps you ......

I'm having trouble. Can someone answer?


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Answer:

okay wait

Step-by-step explanation:

£42 is shared equally between 3 friends.
How much does each friend get?

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Given that £ 42 is distributed among 3 friends.

So, each will get

[tex] = 42 \div 3 \\ = £14[/tex]

The mixed number 2Five-sixths is equivalent to a fraction with a denominator of 6.

2Five-sixths = StartFraction question mark over 6 EndFraction

What is the missing numerator in the equivalent fraction?

8
12
17
18

Answers

Answer:

what the answer

Step-by-step explanation:

questions
124 - 444 = ...
345 - (-7) × (-6) = ...​

Answers

Answer:

-320; 303

Step-by-step explanation:

Well... you could really just use a calculator to do this, I mean?

124 - 444 = -320

345 - (-7)*(-6) = 345 - 42 = 303

Answer:

1) 320

2) 303

Step-by-step explanation:

1) simple Subtraction

2) first multiply -7 & -6 = 42

then 345-42 = 303

YES OR NOOO PLEASEE ANSWER

Answers

Answer:

Not a Function.... hope you pass!

Please plot the resulting points.

Answers

Answer:

See explanation

Step-by-step explanation:

When you reflect across the y axis the numbers stay the same but the x coordinates become negative.

So the new coordinates are:

F(-4, 6)

G (-9, 6)

H (-7, 1)

I (-4, 0)

J (-1, 3)

Someone help me with this for BRAINLIEST thank you!

Answers

Hope it helps.

Don't forget to click the Brainliest button if you like my answer and if you have any query, please feel free to ask in the comment section.

[tex]x+y =6 ~~~.....(i)\\\\x =3y -2~~.....(ii)\\\\\text{Substitute}~ x =3y-2~ \text{in equation (i):}\\\\\\3y -2 +y =6\\\\\implies 4y = 6+2\\\\\implies 4y = 8\\\\\\\implies y =\dfrac 84 =2\\\\\text{Substitute y =2 in equation (ii):}\\\\x = 3(2) -2\\\\\implies x = 6-2 =4\\\\\\\text{Hence,}~ (x,y) = \left(4, 2\right)[/tex]

Help help help help math math

Answers

Answer:

r=8

Step-by-step explanation:

The radius is the diameter divided by 2.

So, 16/2 would equal 8.

Area = pi x radius^2

Pi=3 in this case

3x16^2=768cm^2 is the area

4x²-8xy
factorise completely

Answers

Answer:

4x (x - 2y)

Step-by-step explanation:

Pull out what factors they both have and put it outside the parentheses, put the rest inside after dividing.

The factoring of the algebraic form 4x² - 8xy is 4x(x - 2y).

INTRODUCTION~Algebraic Forms and their Elements

Algebraic form is a mathematical form whose presentation involves symbols or letters to represent unknown numbers.

Elements of Algebra:

1. Variables, Constants and Coefficients

Pay attention to the algebraic form 3x + 2y + 3

From the algebraic form above, x and y are variables (variables), while the number 3 is a constant. A variable is a substitute symbol for a number whose value is not clearly known. While constants are terms of an algebraic form in the form of numbers and do not contain variables.

And what is meant by the coefficient is the constant factor of a term in algebraic form. The coefficient on the 3x term is 3, on the 2y term it is 2.

2. Terms and Factors

» The term is part of the algebraic form which is limited by the operation of addition (+) or difference (-). The term one is an algebraic form that is not connected by the operation of addition or difference.

Example: 2x, 2a², -4xy, . . .

» Term two is an algebraic form that is connected by an operation of sum or difference.

Example: 2x + 3, a² - 4, 3x² - 4x, . . .

» Similar terms in algebraic form are terms that have the same variable and the same power.

Example:

2a is similar to 3a, 4a, etc.

» Factors are part of the algebraic form that is restricted to multiplication operations.

Example: 5n = 5 × n, 5 and n are factors of 4n, respectively.

Calculation Operations on Algebraic Form

1. Addition and subtraction of algebraic forms can only be done on similar terms.

2. Multiplication and division of algebraic forms.

Multiply two terms by constants or variables.

Example:

3 (4y + 5)

= (3 × 4y) + (3 × 5)

= 12y + 15

Division of two terms with a variable or constant, for example:

(8y+4)/2 = 8y/2 + 4/2 = 4y + 2

DISCUSSION

4x² - 8xy

= 4xx - 8xy

= 4xx + 2 × 4xy

= 4x (x - 2y)

Conclusion:

So, The factoring of the algebraic form 4x² - 8xy is 4x(x - 2y).

Learn More:

(mampir ke indo:v)

Algebraic subtraction material: https://brainly.co.id/task/35216852Algebraic arithmetic operations: https://brainly.co.id/task/26250852The equation of the value of x in algebraic form: https://brainly.co.id/task/42124780

_____________

Answer Details:Class: 7 Middle SchoolSubject: MathMaterial: Chapter 2.1 -Operations of Algebraic FormsCategorization Code: 7.2.2.1Keywords: Factor algebra

I need help please!!!

Answers

Answer:

x=1

Step-by-step explanation:

The axis of symmetry of a parabola is a vertical line that divides the parabola into two congruent halves. In this equation, the AOS is x=1

Brainliest would be appreciated! :-)

Another way to find the AOS, is by looking at the f(x) function, the last number will always be the AOS.

Determine whether each expression was simplified correctly.​

Answers

Answer:

Only b is correctly simplified.

Step-by-step explanation:

HELLLPPPPP!!

What is the solution to the following?

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The answer is x is greater than or equal to 3

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the fraction on top is classed the numerator

Answer: numerator

Step-by-step explanation the bottom is the denominator

Hopes this helps✊

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Answer:

The domain of "Per Night Stay" would amount to $125 surcharge by day amounting to $3000 total cost function

Step-by-step explanation:

question y+5/y+6=5/4
pleas answere this question it is really hard for me I will be thankfull

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Refer to the attachment.

=》y = -10

_____

Hope it helps ⚜

Can someone please help? This is difficult.

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They intersect at a point called the centroid. See the attached sketch.

3. Дано: K, P, K, P, OP, = PP., КК, = 5 см. Знайти: OK.​

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Answer:

where are you from

can you be my friend

I'm from Australia and you

From this pie chart answer the following:

(i) If 20 people liked classical music, how many young people were surveyed?
(ii) Which type of music is liked by the maximum number of people?

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200 people were surveyed.light music

what is the sqare root of 12

Answers

Answer:

3.46 but if you simplify it is 3.5

Step-by-step explanation:

Answer:

3.46410161514

Step-by-step explanation:

Solve each equation.

1) | 2x - 4 | = 10

2) -5 | -4x + 4 | - 7 = -67

Show all work please :D

Answers

[tex](1)\\\\|2x-4| =10\\\\\implies 2x-4 = 10~~ \text{or}~~ 2x -4 = -10\\\\\implies x = \dfrac{14}2 = 7 ~~\text{or}~~ x = -\dfrac{6}2=-3\\\\\\(2)\\\\-5|-4x+4|-7 = -67\\\\\implies -5|-4x+4| = -67 +7 = -60\\\\\implies |-4(x-1)| = \dfrac{-60}{-5}=12\\\\\implies 4|x-1| = 12\\\\\implies |x-1| =\dfrac{12}4 = 3\\\\\implies x-1 = -3~~\text{or}~~ x-1=3\\\\\implies x = -2~~ \text{or}~~ x = 4[/tex]

Solve with elimination:
10a + 4b = 18
7a + 14 = b
solve for b

Answers

b=7a+14
Might help not sure if it’s correct
So first we want to plug in The equation for b

10a+4(7a+14)=18

(we use the distributive since we have 4 times of b)

when we solve it, we get a is -1

plug in -1 for a

7(-1)+14=7

b=7

plug it back in

10(-1)+4(7)=18

18=18

Hope this helps! :)

Answer as a each as an algebraic expression.

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Answer:

is saying the half of q is 9 so you have to find out the value of q and when you find out the value for example x=18 the half of 18 is 9 I don't know if you undertand my explication

Step-by-step explanation:

18 the half of 18 is 9 because 9+9=18

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Answer:1848

Step-by-step explanation:

good luck with the test or whatever you are doing

Compare 37,007 and 30,707. Which
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Answers

Answer: 37,007 is greater

Step-by-step explanation:

Can i get a brainliest

Answer:

37,007 is greater than 30,707

Step-by-step explanation:

Thats because as you can see reading the numbers left to right, the first ones on the far left are both 3s. so so far they're the same. then go to the second number, making sure you're moving left to right. 7 is more than 0 therefor 37,007 is greater than 30,707

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Step-by-step explanation:

what is 2X ( 3)+( 1)+( 2)+=

Answers

Step-by-step explanation:

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Answer:

$7,507

Step-by-step explanation:


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this week. How much is his gross wage for the week?

Answers

Answer:

$290

Step-by-step explanation:

if minimum wage is $7.25

7.25×40= 290

Are these lines perpendicular?
yes
no

Answers

Answer: yes these lines are

Answer:

yes

Step-by-step explanation:

Perpendicular lines intersect eachother

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