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2 years ago

A random sample of 100 cartons of eggs is selected from a grocery store, and it is discovered that 2% of the

Mathematics

1 answer:

Anettt [7]2 years ago

7 0

Using the concepts of parameter and statistic, it is found that the correct option is:

2% is a statistic and 5% is a statistic.

<h3>Parameter and Statistic:</h3>

If the information is taken from a sample, it is called a statistic.

If the information is taken from a population, it is called a parameter.

In this problem, both percentages are taken from samples, hence both the 2% and the 5% represents statistics, and the first option is correct.

To learn more about the concepts of parameter and statistic, you can take a look at brainly.com/question/25959069

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Please help me with this

Ronch [10]

Think of it as two rectangular prisms next to each other, and find the volume of each one separately.

The big one on the left has a volume of 4 * 12 * 6, or 288.

The smaller one on the right has a volume of 2 * 6 * 6, or 72.

288 + 72 = 360. 360 cubic feet of water are needed.

8 0

3 years ago

Assume that trees are subjected to different levels of carbon dioxide atmosphere with 7% of the trees in a minimal growth condit

taurus [48]

Answer: The mean and standard deviation are 567.2 and 89.88 resp.

Step-by-step explanation:

Since we have given that

For 370 parts per million = 7% = 0.07

For 440 parts per million = 10% = 0.10

For 550 parts per million = 49% = 0.49

For 670 parts per million = 34% = 0.34

So, Mean of the carbon dioxide atmosphere for these trees would be

$E[x]=370\times 0.07+440\times 0.1+550\times 0.49+670\times 0.34=567.2$

And

$E[x^2]=370^2\times 0.07+440^2\times 0.1+550^2\times 0.49+670^2\times 0.34=329794$

So, Variance would be

$Var\ x=E[x^2]-E[x]^2=329794-567.2^2=8078.16$

So, the standard deviation would be

$\sigma=\sqrt{8078.16}=89.88$

Hence, the mean and standard deviation are 567.2 and 89.88 resp.

3 0

3 years ago

find each unit rate round to the nearest hundredth if necessary on a hundred and $140 for 18 ft squared

Marina86 [1]

Divide both by 18.
<span>140/18=7.78 </span>

<span>So... $7.78 per foot</span>

4 0

3 years ago

If x = 9 and y = -2 what’s 10 + 5xy

Ksenya-84 [330]

Answer:

10 + 5xy = -80

Step-by-step explanation:

10 + 5xy = ?

x = 9 and y = -2

10 + 5xy = 10 + 5(9)(-2)

= 10 - 90

= -80

5 0

3 years ago

A student finished 72 of her homework problems in class. If the ratio of problems she finished to problems she still had left wa

kramer

Finished:Left

8:1

8/1 = 72/x

Cross Multiply

8x=72

divide each side by 8

x=9

She already finished 72 and has 9 remaining

Total = Finished + Remaining = 72 + 9 = 81

4 0

3 years ago