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ss7ja [257]
3 years ago
14

Which of the following characteristics of experiments are not also characteristics of surveys? Check all that apply.

Mathematics
2 answers:
mamaluj [8]3 years ago
7 0
<span>The following characteristics of experiments are not also characteristics of surveys:
- The first one is </span><span>B. The study compares two or more treatments (possibly including "no treatment").
- The other one is </span><span>D. The study involves one or more treatment groups and a control group.</span>
Kobotan [32]3 years ago
4 0

Answer:

B and D

Step-by-step explanation:

Surveys are only tested with one group

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Which relationship has a domain of real numbers?
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Answer:Domain: all x-values that are to be used (independent values).

Step-by-step explanation:The domain is the set of all first elements of ordered pairs (x-coordinates). The range is the set of all second elements of ordered pairs (y-coordinates). Only the elements "used" by the relation or function constitute the range. Domain: all x-values that are to be used (independent values).

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3 years ago
Of the pets in the pet show,
Kay [80]

Answer:

45/58 it is already in simplest form

Step-by-step explanation:

4 0
3 years ago
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Twice the difference of x and 5 is -33
Elden [556K]
2*(x-5) = -33, so x-5 = -16.5, so x = -11.5

This is assuming that "the difference between a and b" is a-b, which seems to be the accepted interpretation.
3 0
3 years ago
if we have a geometric series with u1 = 2.1 and r= 1.06, what would the least value of n be such that Sn &gt; 5543?
bulgar [2K]

Answer:

  88

Step-by-step explanation:

Write the expression for the sum in the relation you want.

  Sn = u1(r^n -1)/(r -1) = 2.1(1.06^n -1)/(1.06 -1)

  Sn = (2.1/0.06)(1.06^n -1) = 35(1.06^n -1)

The relation we want is ...

  Sn > 5543

  35(1.06^n -1) > 5543 . . . . substitute for Sn

  1.06^n -1 > 5543/35 . . . .  divide by 35

  1.06^n > 5578/35 . . . . . . add 1

  n·log(1.06) > log(5578/35) . . . take the log

  n > 87.03 . . . . . . . . . . . . . . divide by the coefficient of n

The least value of n such that Sn > 5543 is 88.

3 0
3 years ago
It is a well-known fact that Dr. Barnes rides a skateboard, sometimes even on campus. Suppose that Dr. Barnes selects a skateboa
Genrish500 [490]

Answer:

75%.

Step-by-step explanation:

In total, there are 3 gnarly boards in the first shop and 1 gnarly board in the second. We know that he has selected one gnarly board out of the 3 + 1 = 4 existing boards.

The probability the board came from the first shop is 3 / 4 = 0.75 = 75%.

Hope this helps!

8 0
3 years ago
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