37. A researcher believes that students who practice taking all of their regular tests on the computer
will do better on the State's final exam which is on the computer than the students taking their
regular tests by paper and pencil. Which would be the null hypothesis?
a.
H: The average on the state exam of the students using paper and pencil tests is greater than or
equal to the average on the state exam of the students using computer tests.
b. H.: The average on the state exam of the students using paper and pencil tests is greater than the
average on the state exam of the students using computer tests.
c. H: The average on the state exam of the students using paper and pencil tests is less than or
equal to the average on the state exam of the students using computer tests.
d. H: The average on the state exam of the students using paper and pencil tests is less than the
average on the state exam of the students using computer tests.

Answers

Answer 1

Answer:

D

Step-by-step explanation:

D option is correct xy=-10

if this was to u plzz mark me the brainliest

Pretty with this. this is worth 20


Related Questions

Raise the product of 36 and 9 to the power of the sum of 2 and 4.
Which of the following expressions matches the sentence above?
A.
(36 = 9(2+4)
B.
(36 x
9)(2+4)
O c.
(36 x 9)(2x4)
D.
(36 = 9)2 + 4

Answers

Answer:

B

Step-by-step explanation:

36 x 9 = 324

4+2=6

324^6

=324*324*324*324*324*324

=1156831381426176

:D
I’m kinda confused with this need help

Answers

Answer: 2n + 1 = n + 11

Steve's bedroom measures 12 feet by 13 feet. Ricardo's bedroom measures 8 feet by 14
feet. Assuming that both bedrooms are rectangular, whose room has the greater area?

Answers

Answer: Steve's bedroom has the greater area.

Step-by-step explanation: The formula for area is Area = Length x Width.

So all you have to do to figure this out is multiply the Width of the rooms by the length.

So Steve's room is 12ft X 13ft = 156ft

Ricardo's room is 8ft X 14ft = 112ft

156ft > 112ft

Steve's room has a greater area.

f(x)=x^2+2x-1
find f(-3)​

Answers

Answer:

2

Step-by-step explanation:

pls help me on this iready question I beg u

Answers

Answer:

We conclude that for 1/2 batch, Faird would require 3/8 cups of sugar.

Step-by-step explanation:

Suger needed for a full batch = 3/4Given that Farid is making 1/2 of batch

We need to determine the expression for the amount of sugar Freed needs to make 1/2 batch.

Let 'x' be the batch and 'y' be the amount of sugar

Suger needed for a full batch = 3/4 cup of a sugar

so

x = 3/4y

But, Farid is making 1/2 of the batch.

Thus, multiply both sides by 1/2

[tex]x\times \frac{1}{2}\:=\:\frac{3}{4}y\times \frac{1}{2}[/tex]

[tex]\frac{x}{2}=\frac{3y}{8}[/tex]

Therefore, we conclude that for 1/2 batch, Faird would require 3/8 cups of sugar.

What is the value of the expression below?
2 [32 - (4-1) to the power of 3]
Enter your answer in the box.

Answers

Answer:

the answer is 10

Step-by-step explanation:

Abigale drove 20 kilometers in 10 minutes, and Jordan drove 30 kilometers in 15 minutes.
Both Abigale and Jordan drove at a constant speed.
Did Abigale and Jordan drive at the same speed? Explain your reasoning.

Answers

Answer:

15

Step-by-step explanation: 20+10+3+30 =30

what is the maximum value of the function? explain what the maximum value of this represents in this situation. make sure to include information about the x-value and y-value in your explanation

Answers

Where’s the picture I need it I order to answer

wowwwww he just roasted youuuuuuuuuu!!!!!

PLEASE EXPLAIN STEPS

Answers

Answer:

C. m<C = m<F

Step-by-step explanation:

this is because in their triangle names, they are in the same spot (third letter of the name)

if they are in the same spot, they have to be congruent

same goes for the other letters, <A has to be congruent to <D and <B has to be congruent to <E

The coordinates of the point P are (−6,−2) and the coordinates of point Q are (−6,9). What is the distance, in units, between the point P and point Q?

Answer____________Units.

Answers

Answer:

The distance in units would be -8, -3.

Step-by-step explanation:

Find the measures of the exterior angles.

Answers

Answer:

The measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles. (Non-adjacent interior angles may also be referred to as remote interior angles.) FACTS: An exterior ∠ is equal to the addition of the two Δ angles not right next to it.

Luther starts jogging 8minutes on the first day and then increases his time by 4 minutes each day. How many minutes will he jog the fifth day?

Answers

Answer:

80?

Step-by-step explanation:

Answer:

(8+4)x5

Step-by-step explanation:

What is the 15th term of the sequence an =
-3n+50
D. 95

Answers

Answer:

= 105

Step-by-step explanation:

Answer:

here ya go

Step-by-step explanation:

a

9

=

105 I think

choose all the polygons

Answers

Answer:

A, B, E, F

Step-by-step explanation:

A polygon is ANY shape formed with only straight lines.

Check whether (x – 1) (x +2) = x + 3 is a quadratic equation or not.​

Answers

Answer:

no, it is not

Step-by-step explanation:

STEP 1: Simplify (x−1)(x+2).

[tex]x^2+x-2=x+3[/tex]

STEP 2: Move all terms containing x to the left side of the equation.

[tex]x^2-2=3[/tex]

STEP 3: Move all terms not containing x to the right side of the equation.

[tex]x^2=5[/tex]

STEP 4: Take the square root of both sides of the equation to eliminate the exponent on the left side.

[tex]x=[/tex]±[tex]\sqrt{5}[/tex]

STEP 5: The complete solution is the result of both the positive and negative portions of the solution.

[tex]x=\sqrt{5} ,-\sqrt{5}[/tex]

simplify the fraction 15/20

Answers

15/20

Figure out what number to use for simplify

Which is 5

Divide the numerator and denominator by 5

15/5=3

20/5=4

Answer:3/4


Is there a proportional relationship between x and y? Explain.
8 10 12 14
х
y
5
9
11
A.
Mo
at 2

No; all ratios
are not equivalent.
B.

Yes; each x value and y value increases by 2.
C.
Yes; the difference between each x value and y value is 3.
D

202
No; all ratios
are greater than 1.

Answers

Answer:

The answer is B. Hope it helps :)

What is the exact distance from (-5,1) to (3,0).

Answers

Answer:

The distance between the two points is [tex]\sqrt{65} \ \text{units}.[/tex]

Step-by-step explanation:

In order to find the distance between two coordinate pairs, we can use the distance formula:

[tex]\displaystyle \bullet \ \ \ d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

Our coordinate pairs need to be labeled accordingly, so we can use this naming system:

[tex]\bullet \ \ \ (x_1, y_1), (x_2, y_2)[/tex]

This assigns a name to our points:

[tex]x_1 = -5[/tex][tex]y_1 = 1[/tex][tex]x_2 = 3[/tex][tex]y_2 = 0[/tex]

Therefore, we can plug these into the formula and solve:

[tex]d=\sqrt{(3-(-5))^2+(0-1)^2}\\\\d=\sqrt{(8)^2+(-1)^2}\\\\d=\sqrt{8^2+1^2}\\\\d=\sqrt{64+1}\\\\d=\sqrt{65}[/tex]

Therefore, the distance between the two points is [tex]\sqrt{65} \ \text{units}[/tex].

Which expression can be used to find The amount of money for camp leader spends on b books

Answers

Answer:

Part A: A. 7.50 x b

Part B: $90

Step-by-step explanation:

Part A: The cost of a book is $7.50, so the equation that is going to tell you the total cost of however many books purchased is equation A.

Part B: $90. If the cost of a book is $7.50 and the teacher purchases 12 books, you do $7.50 x 12= $90. You can check the equation by adding $7.50 12 times. You will get the same result.

WA store manager records the number of people who have been in his store compared to the number of hours the store has been open. He graphs the data on the scatterplot below and sketches a trend line.

Store Customers

A graph has hours open on the x-axis, and total customers on the y-axis. A trend line goes through points (1, 25) and (2, 50).

Based on the data collected, if the store has been open 7 hours, which scenario is most likely to be true?
After 1/2 hour, 1 customer had been in the store.
After 6 hours, 129 customers had been in the store.
After 7 hours, 175 customers had been in the store.
After 8.5 hours, 225 customers had been in the store.

Answers

Answer: After 7 hours, 175 customers had been in the store.

Step-by-step explanation:

Did the quiz, Trust me.

Answer:

ccccccccc!

Step-by-step explanation:

plz help i have a branliest

Answers

Answer:

Use a calculator lol

Step-by-step explanation:

Answer:

Step-by-step explanation:

s= 2, 2 and 11

I= 2, 5 and 3

u=2, 7 and 5

t= 2, 2, 3 and 3

b= 2, 2, 5 and 5

n= 2, 2, 19

p= 2, 3, 3 and 5

o= 2, 2 and 17

r= 3, 3 and 11

m= 2, 3, 3 and 7

d= 2, 3 and 7

e= 2, 2, 3 and 11

Please help me please​

Answers

Answer:

To be honest I don't know I just need some points 1+1=2

Step-by-step explanation:

HEY THS IS WORTH 69 POINTS

The vertices of a rectangle are A(2, 0), B(5, 0), C(5, −2), and D(2, −2). Reflect the rectangle in the y-axis, and then rotate


the rectangle 180° about the origin. What are the coordinates of the image?

Answers

Answer:

A′(-2, 0), B′(-5, 0), C′(-5, 2), and D′(-2, 2)

Step-by-step explanation:

I did FLVS (Online School stuffs)

Answer:

A

Step-by-step explanation:

find the slope of the line please help!

Answers

Answer:

the slope is 2/3

Answer:

Step-by-step explanation: First you determine if the slope if positive (increasing) or negative (decreasing). Second you use two points on the line, calculate the rise and the run and express it as a fraction (rise over run).  Rise is the change in the y-value and Run is the change in the x-value.

I REALLY NEED HELp!!!!!!!!

Answers

                                Retail Price      Quantity     Total Price

Twister Pen                   .35          *        2        =     $0.70

Mini Fish Eraser            .50          *        1         =     $0.50

Happy Cap Eraser        .05          *        5        =     $0.25

Erasing Grip                  .35          *        3        =     $1.05

                                                                               ---------

Subtotal                         .7 + .5 + .25 + 1.05    =     $2.50

Sales Tax Amount (unknown because we aren't given a tax value)

Total (also unknown for the same reason)

                                             Retail Price      Quantity     Total Price

Twister Eraser                            .35          *        3        =      $1.05

Astral Wonders Pencils             .20          *        4        =      $0.80

Criss Cross Critters                    .15           *       2        =      $0.30

Traction Mechanical                      

Pencil                                         .35           *       2        =      $0.70

Muchin Mike Sharpener           .50           *       2        =      $1.00

                                                                                            ----------

Subtotal                                 1.05 + .8 + .3 + 0.7 + 1    =     $3.85

Sales Tax Amount (unknown because we aren't given a tax value)

Total (also unknown for the same reason)

Best of Luck!

CAN SOMEONE PLEASE HELP ME WITH THIS QUESTION I NEED TO TURN IT IN TODAY

Answers

Answer:

The answer is 833.65384615385

Step-by-step explanation:

What is the K for this story Problem? John bought 27 baseball cards for $9. How many baseball cards can he buy with $84?

Answers

Answer:

210

Step-by-step explanation:

9 divided by 27 = .33333 = .4

you would divide 9 by 27 because if you did 27 divided by 9 he would only have 3 cards

84 divided by .4 = 210

8. If a runner’s power is 400 W as she runs, how much chemical energy does she convert into other forms in 10.0 minutes? E = P X t

Answers

Answer:

2400kJ

Step-by-step explanation:

Step one:

given data

power P= 400W

time = 10minutes

to seconds= 60*10 = 600 seconds

Required

the energy

Step two:

we know that Energy= power * time

E=P*t

E=400*600

E=240000

E=2400kJ

She converts 2400kJ into other forms

Paula ran 3 1/4 kilometers. Omar ran 4,200 meters. What is the total number of centimeters Omar and Paula ran?

Answers

Answer:

325000 + 420000 = 745000

Step-by-step explanation:

They ran 745000 centimeters all together

What number is equivalent to 15 and 25

Answers

Answer:

yo are you talking about like absolute value?  then it's  | -15 | and | -25 |

Step-by-step explanation:

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