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Sedbober [7]
3 years ago
7

I need help with this question, please

Mathematics
2 answers:
lorasvet [3.4K]3 years ago
8 0
It would = 16 you are most welcome
Sauron [17]3 years ago
4 0

Step-by-step explanation:

red: 2/5

White: 1/5

Black: 2/25

Green: 8/25

If she chose a marble fifty times how many greens would she get:

(8/25) x 50= 16

she would get 16 green marbles in 50 tries.

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What is the standard deviation of a sampling distribution called?
GarryVolchara [31]

Answer: Standard error.

Step-by-step explanation:

If the population is normally distributed , then the standard deviation of a sampling distribution of the sample mean [tex]\overline{x}[/tex] is known as standard error which depends on population standard deviation (\sigma) and the sample size (n).

\sigma_x=\dfrac{\sigma}{\sqrt{n}}

It measure the variability in the sample statistics that happens by chance.

Thus, the standard deviation of a sampling distribution is called the <u>standard error</u>.

8 0
3 years ago
If a line slope of -1/2 contains the point (2,3), then it must also contain which of the following points?
tiny-mole [99]
Before the fraction: -1/2, i have a negative sign
use y=mx+b
3=-1/2(2)+b
3+1=-1+b+1
4=b
check your work
0=-1/2x+4
0+4=-1/2x
(4)÷(-1/2)=(-1/2x)÷(-1/2)
-2=x
another pair is (-2,0) use this to figure out the other points, and/or the points you have in the multiple choice.
5 0
4 years ago
A true-false test contains 7 questions. in how many different ways can the 7-question test be answered
alexgriva [62]
The answer would be 14.
This is because 7 x 2 = 14 and there are 2 options when it's a true or false question.
5 0
3 years ago
Helppppp<br> me anyone :(
Dvinal [7]

Answer:

b

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Suppose that a population parameter is 0.7 and many samples are taken
myrzilka [38]

Answer:

b

Step-by-step explanation:

7 0
3 years ago
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