Dominic wants to test if one of two types of fertilizer (a standard fertilizer and a new product) is better for producing melons of equal weight after a three-month fertilization program. Dominic has two identical land plots (1 and 2) and is considering how to assign 30 melon plants, each of which has a numbered tag, to the fertilizer. What is the best way to do this as a matched-pairs design?
A. Put all the odd-numbered melons in plot 1 and the even-numbered melons in plot 2. Then give the standard fertilizer to plot 1 and the new product to plot 2.
B. Assign the melons completely at random to the two plots using a coin flip, heads meaning plot 1 and tails meaning plot 2. Then give the standard fertilizer to plot 1 and the new product to plot 2.
C. Obtain pairs of melon plants whose seedling heights are roughly equal at the start of the experiment and randomly assign one of the pair to plot 1 and the other to plot 2. Then give the standard fertilizer to plot 1 and the new product to plot 2.
D. Obtain pairs of melon plants whose seedling heights are roughly equal at the start of the experiment and put the taller of each pair into plot 2. Then give the standard fertilizer to plot 1 and the new product to plot 2.
E. Divide the 30 melon plants into two groups, with the 15 tallest seedlings in one group. Randomly choose which plot to assign the tallest plants and assign the smallest plants to the other plot. Then give the standard fertilizer to plot 1 and the new product to plot 2.

Answers

Answer 1

Answer:

C

Step-by-step explanation:

A. is wrong because having a different height for each seedling and not trying to keep it equal is simply worse than making sure the heights are identical.

B. Completely wrong because it would likely result in 1 plot having more melon seedlings than the other.

C. Correct because it makes sure the seedlings are the same height at the beginning of the experiment, allowing less randomness in the experiment.

D. Putting the taller of a each pair for 1 plot makes it the experiment rigged in favor of the plot with taller seedlings

E. Same issue as D.


Related Questions

Luis has a pyramid shaped plant pot. It has a square base with a side length of 36 cm, and the height of the pot is 36 cm. Luis wants to fill the pot with soil so that the soil takes up 75% of the pot's volume. How far up the pot will the soil reach?

Answers

Answer:

The required volume, if he wants to fill 75% of the pot's volume, is 11664cm³

Step-by-step explanation:

The volume of a pyramid is given as

[tex]V = \frac{1}{3} \times A \times h[/tex]

Where V is the pot's volume, A is the base area and h is the height.

Our base is a square, so the base area, if s denotes the side length, would be s x s.

s = 36cm, therefore we have A = 36cm X 36cm = 1296cm².

The height is given as 36cm, therefore we have our volume to be:

[tex]V = \frac{1}{3} \times 1296cm^2 \times 36cm[/tex]

[tex]V = 15552cm^3[/tex]

Since Luis wants to fill 75% of the pot's volume with soil. Then it will take

[tex]\frac{75}{100} \times 15552cm^3 = 11664cm^3 [/tex]

Thus, the required volume, if he wants to fill 75% of the pot's volume, is 11664cm³

Subtract - 5x ^ 2 + 10x - 1 from 6x ^ 2 - x + 3 .

Answers

Answer:

11x^2-11x+4

Step-by-step explanation:

(6x ^ 2 - x + 3)-( - 5x ^ 2 + 10x - 1 )

6x^2-x+3+5x^2-10x+1

11x^2-11x+4

So the answer is 11x^2-11x+4

Jarome is 6 feet tall and cast a shadow that is 8 feet long. If a tree is 24 feet tall, how long will it's shadow be?



27 feet


32 feet


30 feet


18 feet

Answers

Answer:

32 feet

Step-by-step explanation:

6 = 8

24 = ?

24 × 8 = 197

197 ÷ 6 = 32.

Answer:

32 feet

Step-by-step explanation:

ratio 6:8 simplified is 3:4

[tex]\frac{3}{4}[/tex] x [tex]\frac{8}{8}[/tex] = [tex]\frac{24}{32}[/tex]

32 Feet

i need helppp. thanks you!!!

Answers

Answer:

I believe that It would be L.

Once a commercial plane reaches the desired altitude, the pilot often travels at a cruising speed. On average, the cruising speed is 620 miles per hour. If a plane travels at this cruising speed for 8 hours, how far does the plane travel while cruising at this speed?

Answers

Answer:

4960 miles

Step-by-step explanation:

katya tutors and works in the college bookstore to pay for her college tuition. she makes $20 per hour tutoring and $8.50 per hour working in the bookstore.

Answers

What’s the question?

What is the value of x in the equation 0.02x+0.7=0.8−0.03x ?

Answers

The value of x is 2

If Lily got 18 questions right on a 20 questions
test, what percentage of the questions did she
get wrong?

Answers

Answer:

She got 10% of the questions wrong !

Step-by-step explanation:

To solve this problem I used cross multiplication

[tex]\frac{x}{100}= \frac{18}{20}[/tex]

18 x 100 =1800

1800 / 20 = 90

Since they are asking what she got wrong, not what she got right, you just need to subtract.

100% - 90% = 10%

hope this helped !

Answer:

10%

Step-by-step explanation:

18/20 Questions = 0.9 or 90% she got right

2/20 Questions = 0.1 or 10% she got wrong

Can anyone help its due in 10 minuets!

Answers

Answer:

x=30⁰

Step-by-step explanation:

4x-55+3x+25=180

7x-30=180

7x=210

x=30⁰

Proof

3(30)+25=115

4(30)-55=65

115+65=180⁰

if -13x-71=201 what is x

Answers

Answer:

272/-13 or −20.923

Step-by-step explanation:

To solve this equation you need to isolate the variable.

First, add 71 to both sides

-13x-71+71=201+71

-13x=272

Then, divide both sides by -13

-13x/-13=272/-13

So, x=272/-13 or −20.923

Michael borrowed $4,500 from the bank. The bank charged a simple interest rate of 10.5% for the 3 years he had the bank loan. What was the total cost of the loan?

Answers

Answer:

142.85?

Step-by-step explanation:

9) A model airplane kit has a scale factor of 1/144. If the wingspan of the airplane is 1152 inches long, how long would the wingspan of the model airplane be? (Type just the number without the units)

Answers

Given:

Scale factor is [tex]\dfrac{1}{144}[/tex].

Length of wingspan of the airplane = 1152 inches

To find:

The length of wingspan of the model airplane.

Solution:

Scale factor is [tex]\dfrac{1}{144}[/tex]. It means,

1 inches of airplane [tex]=\dfrac{1}{144}[/tex] inches of model airplane.

1152 inches of airplane [tex]=1152\times \dfrac{1}{144}[/tex] inches of model airplane

                                       [tex]=8[/tex] inches of model airplane

Therefore, the length of wingspan of the model airplane is 8 inches.

If f(x) = -5x – 8 and g(x) = 2x + 1, then what is (f o g)(5.7)

A -36.5
B -70
C -72
D 12.4

Answers

D might be I think not to sure

please solve this for be before 7pm EDT​

Answers

Answer for #5:

7 friends

Step-by-step explanation:

convert fraction into 4ths:

1/4, 2/4, 3/4, 1/4

add together:

7/4ths

if each friend ate 1/4 of the pizzas, then there are 7 friends

ALGEBRA 1 HW< please help to give explanations

Answers

Please refer the attached pictures.

Hope this helps! :D

Answer:

See below

Step-by-step explanation:

a)

11x^2 + x^2 = (4x + 8)(3x - 3)12x^2 = 12x^2 + 24x - 12x - 2412x - 24 = 012x = 24x = 2

b)

x/3 - x/9 = 63x/9 - x/9 = 62x/9 = 62x = 54x = 27

c)

6^(x + 9) = 36^x6^(x + 9) = 6^(2x)x + 9 = 2x 2x - x = 9x = 9

d)

4/9 + 1/a = 2/31/a = 2/3 - 4/91/a = 6/9 - 4/91/a = 2/9a = 9/2

e)

√x + 3 = 6x + 3 = 6^2x = 36 - 3x = 33

f)

1.2m - 0.2 = 3.8 + m

1.2m - m = 3.8 + 0.20.2m = 4m = 4/0.2m = 20

g)

(x + 12)^2 = 9x + 12 = ± 3x = ± 3 - 12x = - 9, x = - 15

What is the answer???

Answers

Answer:

AC < CD

RQS > QST

Step-by-step explanation:

The side that sees the bigger angle has a bigger length and so the side that sees the smaller angle has the smaller length in size.

The answer:
AC < CD
RQS > QST

I would like you to help me please.

Answers

Reciprocal is reversing the given fraction.

1. Would be 8/3

2. 2 2/3 as in improper fraction is 8/3, reciprocal would be 3/8

3. -3/8 x 8/3 = -24/24 = -1

4. 3/8 / -8/3 =3/8 x -3/8 = -9/64

5. - 8/3 - -3/8 = -8/3 + 3/8 = -2 7/24

6. Only answer left: 2 7/24

This might take forever but I’ll mark u as brainlist!! This is due tomorrow lol

Answers

the vertex is x and the y intercept is 2

Quand on selectionne son premier pokemon on a le choix entre salameche carapuce bulbizarre ou pikachu

Answers

ayooo what is this is  are some kind a nerd lol

Answer:

vous avez le choix entre la charmander bulbasaur et  

squirtle

You have the choice between charmander bulbasaur and squirtle

Step-by-step explanation:

Here i translated it from english to french

je l'ai traduit entre l'anglais et le français

Please help! im so confused.
i just need you to fill in the blanks. there should be a picture.
I will give you brainiest if you can do all 3!!

tysm! :)

Answers

Answer:

Bestieeeeeeeeeeeeee we need to talk

Step-by-step explanation:

Pleaseeeee its   important

30 points!! WILL GIVE BRANLIEST!!Jane needs open-topped boxes to store her excess inventory at year's end. She purchases large rectangles of thick cardboard with a length of 12 inches and width of 8 inches to make the boxes. She is interested in maximizing the volume of the boxes and wants to know what size squares to cut out at each corner of the cardboard (which will allow the corners to be folded up to form the box) to do this. What is the maximum volume?

Answers

Answer: 14

Step-by-step explanation:

What is the y=mx+b of this?

Answers

I think it’s y=-1x+ -8 or could be written as y=-1x-8

Which of these is a factor of 10?



A. 20

B. 2

C. 4

Answers

Answer:

B. 2

Hope this helps!

Step-by-step explanation:

The factors of 10 are 1, 2, 5, and 10. You can also look at this the other way around: if you can multiply two whole numbers to create a third number, those two numbers are factors of the third. 2 x 5 = 10, so 2 and 5 are factors of 10. 1 x 10 = 10, so 1 and 10 are also factors of 10.

The coach recorded the yards gained or lost by his football team during the first four plays of a game.

First play: –6 yards
Second play: 7 yards
Third play: –15 yards
Fourth play: 11 yards

How many total yards did the team get in this set of plays?

Answers

Answer: -3 yards


Reason: I did the math

3) Shayna and Anjali are selling pies for a school fundraiser. Customers can buy cherry pies and
pumpkin pies. Shayna sold 9 cherry pies and 10 pumpkin pies for a total of $105. Anjali sold 8
cherry pies and 11 pumpkin pies for a total of $106. Find the cost each of one cherry pie and one
pumpkin pie.

Answers

Answer

$7

Step-by-step explanation:

10-8= 2

9-2=7

PLEASE HELP!!!!! Mr. Ramirez purchased 20 concert tickets for a total of $225. The concert tickets cost $15 for adults and $10 for children under the age of 12. What does the solution to the system of equations represent in the context of the problem? Explain.

Answers

Answer:

5

camjoyner9316

04/30/2020

Mathematics

High School

answered

Mr. Ramirez purchased 20 concert tickets for a total of $225. The concert tickets cost $15 for adults and $10 for children under the age of 12. Part A: Write a system of equations to represent the given scenario. Use the variable "a" for adults and "c" for children.

1

SEE ANSWER

ADD ANSWER+5 PTS

camjoyner9316 is waiting for your help. Add your answer and earn points.

Answer

3.0/5

31

wagonbelleville

Ambitious

4.3K answers

17.8M people helped

Answer:

$225 = $15 a + $ 10 c

Given,

Total price = $225

Cost of concert ticket for adults= $15

Cost of concert ticket for children = $10

System of equation to represent scenario

a is variable for adult

c is variable for children

Now,

Total price =  $15 a + $ 10 c

$225 = $15 a + $ 10 c

GOD WILL GIVE YOU A BILLION DOLLARS IN THE FUTURE!!! $$$$
How would I solve the slope for this? FULL SOLUTION AND FORMULA AS WELL PLEASE... GOD BLESS AND U WILL GET A BILLION DOLLARS IF YOU ANSWER. TRUST.

Answers

Answer

Step-by-step explanation:

0.6 radians
1.0 radians
36.9 radians
53.1 radians

Answers

I can help , what’re the choices for me to choose from??

What is the length of leg y of the right triangle?

A right triangle with hypotenuse 37 and legs 35 and y

2
8
12
35

Answers

So we use Pythagorean theorem which is a^2 + b^2 = c^2 now we use this to solve ; the hypotenuse would be c^2 and the leg would be a^2 were solving for b so we do 37^2 - 35^2 which equals 144. The square root of 144 is 12 so the answer is 12! Good Luck!

Answer:

12

Step-by-step explanation:

i took the test

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Answers

6.55

Have a great day!
Y =72/11 or in decimal form it is 6.54 repeating:)
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