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2 years ago

A population has a standard deviation of 7.89. what is the approximate standard error of the mean for a sample size of 300?

Mathematics

1 answer:

scoundrel [369]2 years ago

6 0

Answer:

Below.

Step-by-step explanation:

Standard error =

standard deviation / √n

= 7.89 / √300

= 0.456 approx.

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3 years ago

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The school is t blocks from Jim's house. The library is twice as far as the school is from Jim's house. How far is the library?

Degger [83]

Answer:

2t blocks

Step-by-step explanation:

We measure these distances from Jim's house.

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3 years ago

Electron groups could be considered which of the following?

Yanka [14]

Im pretty sure D bonded pair of electrons is the answer

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3 years ago

A cylinder has a volume of 83 in3 and is 10 in. tall. What is the radius of the cylinder in inches? Round your answer to the nea

Nataly [62]

To find the radius of the cylinder you will use the volume formula and solve for the radius.

V = pi x r^2 x h
83 = 3.14 x r^2 x 10
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r = 1.6 in.

The radius is approximately 1.6 in.

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3 years ago

a storeroom 21 feet long, 15 feet wide, and 11 feet high was enlarged to a length of 25 feet and a width of 17 feet. how many cu

xenn [34]

<h2>1210 cubic feet</h2>

Step-by-step explanation:

Initial dimensions of the storeroom were $21\text{ }ft$ length, $15\text{ }ft$ width and $11\text{ }ft$ height.

The room is in the shape of a cuboid. Volume of a cuboid = $V=l\times b\times h$ , where $l,b,h$ are the length, width and height of the cuboid.

So, Volume of storeroom initially = $21\text{ }ft\text{ }\times15\text{ }ft\text{ }\times11\text{ }ft\text{ }=3465\text{ }ft^{3}\text{ }$

Finally, the length was increased to $25\text{ }ft$ and width to $17\text{ }ft$ .

Final volume of storeroom = $25\text{ }ft\text{ }\times 17\text{ }ft\text{ }\times 11\text{ }ft\text{ }=4675\text{ }ft^{3}\text{ }$

Increase in volume = $4675\text{ ft}^{3}-3465\text{ ft}^{3}=1210\text{ ft}^{3}$

∴ 1210 cubic feet of storage was added.

7 0

3 years ago