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3 years ago

The dispersion among sample means is less than the dispersion among the sampled items themselves becausea:______

Mathematics

1 answer:

german3 years ago

5 0

Answer:

The dispersion among sample means is less than the dispersion among the sampled items themselves because:______

b. Very large values are averaged down

Step-by-step explanation:

The sample means represent average values obtained from both large and moderate values. Through the process of averaging, the data values obtained as the sample means are much closer to the true values. This is why the dispersions among the sampled items will be larger than the dispersions among the sample means. Sample dispersions describe how spread out the data values are on the number line.

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William buys two bags of peaches and three bags of apricots for $17. Sylvia buys four bags of peaches and two bags of apricots f

Rus_ich [418]

Answer: One bag of peaches : $22

Step-by-step explanation:

Hi, to answer this question we have to write an equation for William and Sylvia.

<em>William: 2 p + 3 a = 17 </em>
<em>Silvia: 4p + 2 a =22 </em>

Where:

p = price of one bag of peaches

a= price of one bag of apricots

Solving for "a" in William's equation:

2p +3a =17

3a = 17-2p

a = (17-2p)/3

a= 17/3 -2/3 p

Replacing "a" in Silvia's equation

4p + 2 a =22

4p + 2 (17/3 -2/3p) =22

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4p-4/3p =22-34/3

8/3 p =32/3

p =32/3 ÷8/3

p=4

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3 years ago

A paper company needs to ship paper to a large printing business. The paper will be shipped in small boxes and large boxes. The

lora16 [44]

Answer:

small boxes= 15

large boxes = 5

Step-by-step explanation:

let the number of large boxes be denoted as

Then the number of small boxes is 3 time that of large boxes, i.e.

If the total volume of all boxes is 235 cubic feet,

Then, we can form the following relationship (equation)

17*x+10*(3x)=235

x=5

Therefore the number of large boxes is 5

and that of small boxes is

3*5=15

I hoped i helped

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3 years ago

Suppose the temperature outside is dropping 3 degrees each hour. How much will the temperature change in 8 hours?

mamaluj [8]

Answer:

The temp will drop by 24 degrees in 8 hours

Step-by-step explanation:

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3 years ago

Read 2 more answers

Quick please help!!!!

Westkost [7]

From the equation, we have

$h=-20, k =21 , a^2=20^2, b^2=21^2$

To find the vertex and focus, we have to use the following formula

$Vertices =(h, k+-a) \\ Focii = (h,k+-c)$

And

$c = \sqrt{a^2 + b^2} = \sqrt{400+441} = 29$

So, we have

$Vertices=(-21,20+-20) \\ Focii=(-21, 20+-29)$

$Vertices =(-21,0),(-21,40) \\ focii=(-21,-9),(-21,49)$

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3 years ago

Martin bought a painting for $5000. It is expected to appreciate at a continuous rate of 4%. Write an exponential equation to mo

tamaranim1 [39]

Answer:

y=5000(1.04)^t

Step-by-step explanation:

Given data

Cost of painting=$5000

Rate of increase=4%

the exponential increase expression is

y=P(1+r)^t

Where y= the total amount after growth

P= the initial cost of the painting

r= the rate of increase

t= the time interval

y=5000(1+0.04)^t

y=5000(1.04)^t

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3 years ago