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bulgar [2K]
4 years ago
13

A completely randomized design Group of answer choices has one factor and one block. has one factor and one block and multiple v

alues. can have more than one factor, each with several treatment groups. has only one factor with several treatment groups.
Mathematics
1 answer:
Mazyrski [523]4 years ago
4 0

Answer:

C. can have more than one factor, each with several treatment groups.

Step-by-step explanation:

A completely randomized design can be used in experimental research of a primary factor or multiple factors. The factors could have several treatment groups which are assigned in a random manner. For example, a researcher, could want to determine the effect of a drug against a disease on a class of people. To do this, he designs a treatment group with different concentrations of the drug and a placebo group. He then gets an equal number of subjects, randomly assigning them to each of the groups. The effect of both treatments are compared to know if the drug is indeed effective against the disease the researcher is experimenting on.

Completely randomized design has found application in agricultural and environmental researches.

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Which equation is true for x = –6 and x = 2?
schepotkina [342]

Answer:

x^2+4x-12=0

Step-by-step explanation:

If a equation has two zeros x=a and x=b then equation can be written as

(x-a)(x-b)=0

similarly if a equation has two zeros at x = −6 and x = 2

then equation can be written as

(x+6)(x-2)=0

x^2+6x-2x-12=0

x^2+4x-12=0

Therefore x^2+4x-10 is required equation

3 0
3 years ago
Read 2 more answers
Kelly is making necklaces for her friends,.She has 450 beads. If 30 beads are used in each necklace, How many necklaces can she
kolezko [41]

Answer:

15

Step-by-step explanation:

If each necklace takes 30 beads, she can make 15 necklaces until she runs out of beads. 450÷30=15. Hope this helps!

6 0
3 years ago
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Will give brainliest
givi [52]

Answer:

69 and 29

Step-by-step explanation:

if you add 90 by 69 and 29 you will get the answer of 180.

5 0
3 years ago
In Alaska, the temperature can get cold really quickly. Yesterday, the temperature dropped 3° (° means degrees) for 9 straight h
Tju [1.3M]

Answer:

Step-by-step explanation:

Idk

4 0
4 years ago
GUYS I NEED HELP ASAP
vovangra [49]

Answer:

A=2400ft

Step-by-step explanation:

A rectangle is a closed planer quadrilateral with four  right angles and its opposite sides are the same length. The fence around it including the gates is 200 feet long, so basically they are providing the perimeter of the rectangle. The perimeter of a rectangle is equal to the sum of all its sides. Hence:

Perimeter=w+h+w+h=2w+2h\\\\Where:\\\\w=Width\\h=Height

The ectangular playground is 40 feet wide, so:

w=40ft

Therefore:

Perimeter=2w+2h\\\\200=2(40)+2h\\\\200=80+2h

Solving for h:

2h=200-80\\\\2h=120\\\\h=\frac{120}{2} \\\\h=60ft

The area of a rectangle is equal to the product of two of its contiguous sides, hence:

A=wh\\\\A=(40)(60)=2400ft

I attached you a picture of the rectangle

5 0
3 years ago
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