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2 years ago

What happens to the mean of the data set shown below if the number 20 is added to the data set?

Mathematics

1 answer:

nasty-shy [4]2 years ago

6 0

Answer: The data set is missing therefore I will give you a more general answer

answer : The mean value will shift ( to the right ) by 20

Step-by-step explanation:

when a number is added to each data value in a data set the mean value will shift ( to the right ) likewise the mode, and Median by the same amount that was added to the data set . but the range and IQR will remain unchanged

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About 12% of individuals write with their left hands. If a class of 130 students meets in a classroom with 130 individual desks,

Lynna [10]

Answer:

0.1019

Step-by-step explanation:

Probability, p=12%=0.12

Sample size, n=130 students

Those writing with left=14 students

Using the formula for binomial distribution

P(X≤x)= $\left[\begin{array}{}n\\x\end{array}\right]p^{x}(1-p)^{n-x}$

Substituting 0.12 for p, 130 for n, 14 for x we obtain

P(X≤x)= $\left[\begin{array}{}130\\14\end{array}\right]0.12^{14}(1-0.12)^{130-14}$

P(X≤x)= $130C14*0.12^{14}(0.88)^{116}$

P(X≤x)=0.1019

3 0

3 years ago

Solve. Use the strategy "work backward."

cestrela7 [59]

Let that be x

ATQ

$\\ \rm\Rrightarrow 3x-6/5=9$

Arrange accordingly to work backwards(Every thing is reversed)

$\\ \rm\Rrightarrow 9(5)+6/3=x$

$\\ \rm\Rrightarrow 45+6/3=x$

$\\ \rm\Rrightarrow 51/3=x$

$\\ \rm\Rrightarrow x=17$

8 0

1 year ago

M+9n<br> m=7 n=6<br> hurryyyyyyyyyyyyyyyyyyyyyyyy

eduard

7 + 9 *6
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8 0

2 years ago

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Y=f(x+4) graphed help

Inessa [10]

Answer: y=fx+4f

Step-by-step explanation:

There is no graph possible for this equation.

5 0

3 years ago

Jennie makes 7 quilts with 21 yards of material. how many yards of material is required to make 12 quilts

kozerog [31]

Each quilt takes 3 yards of material so it would be 36

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2 years ago

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