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3 years ago

Randomization in an experiment is important because it ensures that

Mathematics

1 answer:

Alexeev081 [22]3 years ago

5 0

Answer:

C.) each treatment is thought of as a value of the explanatory variable

Step-by-step explanation:

The main purpose for using randomization in an experiment is to control the lurking variable and establish a cause and effect relationship.

If we do not control lurking, or confounding, variables, we cannot accurately establish a cause and effect relationship; this means we cannot ensure that each treatment is a value of the explanatory variable.

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Write a quadratic function f whose zeros are 1 and -12

Mandarinka [93]

Hello,

By definition, the following function meets the requirements

$f(x)=(x-1)(x+12)=x^2+11x-12$

Thanks

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3 years ago

Which expression is equivalent to 3(6m)+m 3 6 m + m ?

svetlana [45]

Answer:

some Equivalent expressions to 3(6m)+m is;

18m+m

6(3m)+m

2(9m)+m

19m

Step-by-step explanation:

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3 years ago

Tom bought 2.1 pounds of each type of fruit shown on the sign. What was the total cost of the fruit he brought.

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Answer:

Can I see the sign?

Step-by-step explanation:

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3 years ago

Find the slope of (-4,3) (-3,4)

insens350 [35]

Answer:

y = x + 7

Step-by-step explanation:

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2 years ago

A container holds 9 red markers, 13 blue markers, and 17 green markers. You will randomly select two markers without replacement

IRISSAK [1]

Answer:

R-------8/38--------RR

R------9/39--------B-------13/38-------RB

G------17/38--------RG

R-------9/38--------BR

B--------13/39------B-------12/38-------BB

G-------17/38-------BG

R-----9/38--------GR

G---------17/39-------B------13/38-------GB

G------16/38-------GG

b).

9 ways
ways you can select 1 blue are; RB,BR,BG,GB

RB=9/39 × 13/38=3/38

BR= 13/39 × 9/38 =3/38

BG= 13/39 × 17/38=17/114

GB= 17/39 × 13/38=17/114

=3/38 +3/38+17/114+ 17/114 =26/57

Probability of selecting 2 red markers= RR = 9/39 × 8/38 =12/247

Probability of selecting a green marker and then a red marker= GR= 17/39×9/38 =51/494

8 0

3 years ago