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2 years ago

Here are the chorus datz: {0, 10, 10, 20, 20, 20, 20,30, 30, 40) What is the mean?

Mathematics

2 answers:

masya89 [10]2 years ago

7 0

7. 20

8. 40

Add them all up divide by the total amount of them

sergeinik [125]2 years ago

5 0

Answer:

7 is 20

8 is 40

Step-by-step explanation:

Mean is the total of all the numbers divided by the amount of numbers

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A person gets on and off a bathroom scale four times. The four readings (in pounds) are 148, 151, 150, and 152. Each time after

Ganezh [65]

Answer:

See explanation below

Step-by-step explanation:

Since each time after the person gets off the scale, the reading is 2 lb the person's weight must be near the mean of

148-2, 151-2, 150-2, 152-2; that is to say, near the mean of 146, 149, 148, 150 = (146+149+148+150)/4 = 148.25

We could estimate the uncertainty as the standard error SE

$\bf SE=\frac{s}{\sqrt{n}}$

where

s = standard deviation of the sample

n = 4 sample size.

Computing s:

$\bf s=\sqrt{\frac{(146-148.25)^2+(149-148.25)^2+(148-148.25)^2+(150-148.25)^2}{4}}=1.479$

So, the uncertainty is 1.479/2 = 0.736

It is not possible to estimate the bias, since it is the difference between the true weight and the mean, but we do not know the true weight.

5 0

3 years ago

Solving multi-step equations 1) p-1=5p+3p-8

Feliz [49]

P=1. I hope this helps. :)

6 0

3 years ago

Read 2 more answers

Which of the following are geometric sequences?

Nana76 [90]

B. 10, 5, 2.5, 1.25, 0.625, 0.3125

5 0

3 years ago

The manager at a supermarket arranged 10 rows of cans. He put 2 cans in the first row, 4 cans in the second row, and 6 cans in t

Elena-2011 [213]

A)

2, 4, 6, 8, *10

The fifth row contains 10 cans.

----------------------------------------------------

b)

2+4+6+8+10+12+14+16+18+20=110

-----------------------------------------------------

c)

2*Row=Number Of Cans

When Row=1, Number Of Cans=2.

When Row=5, Number Of Cans=10.

When Row=10, Number Of Cans=20.

6 0

3 years ago

-9+8k=7+4k(if there is no solution,type in ''no solution'') k= Answer

Shtirlitz [24]

Answer:

k = 4

Step-by-step explanation:

-9 +8k = 7+4k

Subtract 4k from each side

-9 + 4k = 7

Add 9 to each side

4k = 16

Divide by 4

k = 4

Plug in the value you got for k:

-9 + 8(4) ? 7 + 4(4)

-9 + 32 ? 7 + 16

23 ? 23

23 = 23

4 0

3 years ago

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