1. Based on data collected over several sessions, a statistically minded trainer of office typists modeled the linzoom in

between the number of hours of training a typist receives and the typist's speed (in words per minute) with the equauon

speed = 10.3 +5.4(hour). After some training, one of the typists was told that the speed he attained had a residual of 4.2

words per minute. How should he interpret this?

Choose the correct answer below.

1

A. He cannot interpret his residual without also knowing the correlation.

B. He cannot interpret his residual without also knowing the size of other people's residuals.

C. He types slower than the model predicted, given the amount of time he spent training.

D. He types faster than the model predicted, given the amount of time he spent training.

Answers

Answer 1

Answer:

Statement D is correct.

Step-by-step explanation:

Solution:

Data Given:

Linear Regression Relationship = Speed = 10.3 + 5.4 (hour)

Linear Regression Relationship = y = mx + c

Here,

m = slope = 5.4

c = 10.3 = y - intercept

The correct Answer is D)

Because:

As, the residual value is positive, it means the typist attained faster speed than the model predicted. As we know, residuals is the result of difference between predicted values of the model and data values. On the contrary, if residual would be negative then we would say that typist speed is slower than the model predicted.

Hence, Statement D is correct.


Related Questions


Explain the rules for multiplication and division to convert units. How do you know when to multiply and when to divide to convert units of measurement?
Write three to four sentences.

Answers

Answer:

You can use similar processes when converting from smaller to larger units. When converting a larger unit to a smaller one, you multiply; when you convert a smaller unit to a larger one, you divide. 

The basic rule is: If you need to convert from a larger unit to a smaller unit, multiply. If you need to convert from a smaller unit to a larger unit, divide. You will make the number smaller and, as you already know, division is all about making numbers smaller.

Answer: To convert larger units to smaller units, multiply. When the units are smaller, you need more of them to express the same measure. To convert smaller units to larger units, divide. When the units are larger, you need fewer of them to express the same measure.

Step-by-step explanation: edge 2022

can someone answer these!

Answers

4×2=8

9x5=45

answer: 8/45

7. Wr ite a multiplication equation that represents the question: how many 2/5s are in 9/4?* Your answer​

Answers

Answer:

how many 2/5s are in 9/4? - it would be two

hope this helps

please help anyone will mark BRAINILEST !!!!!!!!!!!!!!!!!!!!!!!!!!

if 2m - 6 = 8m then 3m = ?

A. 3
B. -1
C. -3
D. -6

Answers

Answer:

c

Step-by-step explanation:

m= -3

c option

Thanks me later

Answer:

c

Step-by-step explanation:

3m - 6  = -3......da da bop boom pow

Move numbers to the lines to create two absolute value expressions that represent that distance between the two points on the number line

Answers

12-13 I did this dude

Answer:

Expression A: | -10 - (-6) |
Expression B: | -10 + (6) |

Step-by-step explanation:

#11: Write the equation below in standard form.
*
y - 2 = -4(x - 1)

Answers

Answer:

y - 2 = -4x + 4

Step-by-step explanation:

Just simplify is out ^-^

4 x + y = 6 Should do the trick

someone pls help me!! thank you!!

Answers

Final Answer is 4.5

= 4.5hours more time was used on games than on research.

if you can get 3 pints of raspberries for $12.00 how many pints can you get per dollar

Answers

Answer:

0.25 pints of raspberries do you get per dollar

Caroline was thinking of a number. Caroline halves the number and gets 7.3. Form an equation with x from the information.​

Answers

Answer:

The equation is: [tex]\frac{x}{2} = 7.3[/tex]

Step-by-step explanation:

Caroline was thinking of a number.

We are going to call this number x.

Caroline halves the number and gets 7.3.

To find half of a number, we multiply by 1/2. So

[tex]\frac{1}{2} \times x = 7.3[/tex]

[tex]\frac{x}{2} = 7.3[/tex]

Choose the A that seems to be congruent to the given one.

AADBA
OECB
BCA
EAB

Answers

Answer:

BCA

Step-by-step explanation:

assuming the shape is symmetrical, BCA would be the congruent (equal) angle

BCA is the correct answer

PLEASE HELP!!!!!!!!!!!

Answers

9514 1404 393

Answer:

  a.  plane DEA

Step-by-step explanation:

A plane can be named by naming any 3 non-collinear points in the plane, or by using the plane's name as indicated in the drawing.

Here, points in the plane are A, D, E, F, with DEF all on  the same line. So A plus any two points from the line will constitute a name for the plane. Also, this plane is identified with a script M that can be used to name the plane.

M is not an answer choice, but DEA is. So, the appropriate choice is ...

  plane DEA

__

F is a point, not a plane name. C is not on the plane, so cannot be used to name it. 'k' is a line name, not a plane name.

what are numbers that are the same distance from 0 but in opposite directions

Answers

Answer:

Opposite numbers

Step-by-step explanation:

Opposite numbers are defined as numbers that have the same distance from zero but are on opposite sides of zero. So opposite numbers have the same absolute values. Another word for opposite numbers is additive inverses because when opposite numbers are added together the sum is always zero.

HELP HELP HELP HELP!!!!!

Do not guess please!!

Which is the correct answer? Show you how know.

Answers

Answer:

the answer is D.............

Answer:

AC = 6√6

Step-by-step explanation:

AC = x√3

BC = x

Knowing that 6√2 = x

6√2 x √3 = 6√6

PLEASE HELP ME 20 POINTS!!!!!!!!!!! In the plane shown in the figure below, lines land mare cut by the transversal line n. The eight angles at the
intersections of these lines are labeled. Which of the following statements, when it is true, CANNOT always be used
to prove that lines land mare parallel?

Answers

Answer:

Option (4)

Step-by-step explanation:

Since, lines l and m are the parallel lines and line 'n' is intersecting these parallel lines,

Option (1)

∠c ≅ ∠y

True.

[Corresponding interior angles]

Option (2)

∠a ≅ ∠w

True.

[Corresponding interior angles]

Option (3)

∠b ≅ ∠x

True.

[Corresponding interior angles]

Option (4)

∠b ≅ ∠z

False.

[Since, ∠b + ∠Z = 180°, consecutive exterior angles]

Option (5)

∠a ≅ ∠z

True.

[Alternate exterior angles]

Therefore, Option (4) will be the answer.

K/X=W+v solve for the letter x

Answers

Answer:

[tex]\displaystyle X=\frac{K}{W+v}[/tex]

Step-by-step explanation:

Equation Solving

Equations are solved for a given variable by performing a sequence of operations that lead to the variable to be alone, usually on the left side of the equation.

We are given the equation:

[tex]\displaystyle \frac{K}{X}=W+v[/tex]

It's required to solve it for X.

Note X is in the denominator of a fraction. To solve for X, we simply take the reciprocal on both sides of the equation:

[tex]\displaystyle \frac{X}{K}=\frac{1}{W+v}[/tex]

Now multiply by K:

[tex]\boxed{\displaystyle X=\frac{K}{W+v}}[/tex]

calculate the area of the triangle state the units of the answer

Answers

Answer:

??????theres nothing??????

Grace Cut three pieces of ribbon each piece was 2/5 of a foot long. How many feet of ribbon does she have in all?

Answers

2/5 of a foot=0.4 feet
0.4x3=1.2 feet

25x(x + 5)
80 points I need answer ASAP

Answers

Answer:

[tex]25 {x}^{2} + 125x[/tex]

hope it helps

9x - 3 + x² , when x = 4

Answers

Step-by-step explanation:

=9x-3+x²

=9×4-3+4²

=36-3+16

=49

hope it helps.

Juan bought fruit from the grocery store. The variables below define his purchase. Juan’s bananas cost half as much as apples. Which equations can be used to model his purchase? Select each correct equation. *

Answers

Answer:

[tex]B = \frac{1}{2}A[/tex]

[tex]A = 2B[/tex]

Step-by-step explanation:

Given

Represent apple with A and Banana with B

Required

Determine the relationship between A and B

From the question, we understand that:

B costs half as much as A

This can be represented as:

[tex]B = \frac{1}{2} * A[/tex]

[tex]B = \frac{1}{2}A[/tex]

Multiply both sides by 2

[tex]2*B = \frac{1}{2}A*2[/tex]

[tex]2B = A[/tex]

[tex]A = 2B[/tex]

At 8:00AM the temperature was 25 degrees BELOW ZERO. By noon, the temperature had RISEN by 9 degrees. What was the temperature at noon?

Please help math question

Answers

Answer:

-16 degrees

Step-by-step explanation:

Answer:

Step-by-step explanation:

um.. I need help with the hardest question help me first

Graph the line -4x+y=-8

You don't need to graph it, I just need the equation in a y=mx+b format

Answers

y = 4x - 8
hope this helps!
have a good day :)

Answer: y = 4x - 8

Step-by-step explanation:

It’s actually quite simple, what you have to do is isolate the “y”

At what point does an angle with measure 75º in standard position intersect with unit circle?
a.
(sin 75º, tan 75º)
b.
(cos 75º, tan 75º)
c.
(sin 75º, cos 75º)
d.
(cos 75º, sin 75º)

Answers

Answer:

d

Step-by-step explanation:

x=rcosθ

y=rsinθ

r=1

θ=76°

what is the square of 2/3​

Answers

Answer:

4/9

Step-by-step explanation:

or,2×2=4

or,3×3=9

or,4/9

The answer is 4/9: the square root of 2/3 is 4/9

hello, i just wanted to ask if my teacher's answer in range is correct, and the given question is attached below too, thank you! it's about comparing linear functions

Answers

Answer:b nazxdfskzlcxm,. cáŋ”“azsdcfszzcx dfsgeawqrwe

Step-by-step explanation:

4. You go to the cafeteria for lunch and have a choice of 4 entrees, 5 sides, 5 drinks, and 4 desserts
Assuming you have one of each category, how many different lunches could you make?

Answers

Answer: 4 different lunches

Step-by-step explanation:

If you have one of each, you can't make 5 lunches because you will have 4, 5, 5, and 4

So considering you have an equal amount of each category, you can only make 4 lunches!

Hope I helped! :3

x is. 2 less than. y​

Answers

Answer:

x is 2 less than y

[tex] \huge \boxed{x = y - 2}[/tex]

The triangle shown below has an area of 12 units squared.
Find x.

Answers

Answer:

4

Step-by-step explanation:

area of triangle= 1/2 x perpendicular height x base

Plz help I’m bad at algebraic expressions and translating them.
Here are the expressions.


1.Four more than a number

2.The difference of a number and 9

3.Two times a number plus 6

4.The quotient of n and 6

5.2 times the sum of a number and 3

Answers

Answer:

1. 4+n

2. n-9

3. 2n + 6

4. n/6

5. 2(n+3)

Step-by-step explanation:

Grace are in $7 dollars for each car she washes she always saves $20 of her weekly earnings this week she wants to have at least $67 in spending money how many cars machine wash enter and solve any quality to represent the situation into your value as a simplified mixed number if necessary

Answers

Answer:

12 21/50 (12.42) cars

Step-by-step explanation:

20+67= 87

87÷7=12.42

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