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Masteriza [31]
2 years ago
8

If random samples of size 525 were taken from a very large population whose population proportion is 0.3. The standard deviation

of the sample proportions (i.e., the standard error of the proportion) is
Mathematics
1 answer:
marissa [1.9K]2 years ago
7 0

Answer: 0.02

Step-by-step explanation:

Given: Sample size : n= 525

The population proportion P=0.3

Then, Q=1-P=1-0.3=0.7

The formula to calculate the standard error is given by :-

S.E.\sqrt{\dfrac{PQ}{n}}

\Rightarrow\ S.E.=\sqrt{\dfrac{0.3\times0.7}{525}}=0.02

Hence, the standard deviation of the sample proportions (i.e., the standard error of the proportion) is <u>0.02</u>.

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How to simplify 5 cubed
alex41 [277]

Answer:

125

Step-by-step explanation:

Steps to Solving the Problem

So let's say you have five friends who who are each going to pay you five dollars for the next five days. You can figure out how much money you will receive by calculating five cubed or five to the third power. This will tell us how much money you will get because you will multiply 5 by 5 by 5 or 5 cubed.

To start, you need to turn words into numbers by figuring out the base and exponent. An exponent is the number after the ^ which tells you how many times to multiply the base number by itself. The base number comes before the ^. When five is cubed, five is the base number which will show up before the ^.

Three is the exponent and will be the number after the ^. We know three is the exponent because of the word 'cubed,' which always represents the number three.

We can write out five cubed as:

5^3

Once the exponent and base are figured out, we need to write out the long version, which shows all the multiplication being done. In this case, the exponent of three tells us to multiply five by itself three times.

5 x 5 x 5

This shows us 5 friends multiplied by $5 multiplied by 5 days.

From here, multiply the numbers out to get the final answer. Multiply two numbers at a time to so you don't make a mistake.

5 x 5 = 25

25 x 5 = 125

6 0
3 years ago
HELPPP THIS IS DUE SOON! I WILL MARK BRAINLIEST
expeople1 [14]

Answer:

7.3

Step-by-step explanation:

For this question, you must use the distance formula. The distance formula is based around Pythagorean Theorem, so you will see some similarities.

Distance = \sqrt{(x_{2} - x_{1})^{2} + (y_{2} - y_{1})^{2}

X2 is 7 (X coordinate of school)

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7^2 = 49

4 + 49 = 53

\sqrt{53} = 7.2801...

<em>Round to the nearest tenth...</em>

<em>7.3</em>

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2 years ago
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