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mina [271]
2 years ago
12

Helppp meeee plzzzzzzzz

Mathematics
2 answers:
Naddika [18.5K]2 years ago
6 0

Answer:

percent: a specified amount in or for every hundred.

example of percent:

For example, 1 percent of 1,000 chickens equals 1/100 of 1,000, or 10 chickens; 20 percent of the quantity is 20/100 1,000, or 200.

of example:We use of when we want to show that people or things relate to other things or people.

meaning of :expressing the relationship between a part and a whole.

meaning of what :asking for information specifying something.

example of what :What time are we going to leave tomorrow?

Step-by-step explanation:

gulaghasi [49]2 years ago
6 0

Answer:

Word                      Meaning                                 Example

Percent                  Parts per 100                          24%

Of                           Multiply                                   7/3 x 8/3

Is                            I don't know this one              I don't know

What                      Question?                                What is 2 + 2

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The National Center for Educational Statistics surveyed 5400 college graduates about the lengths of time required to earn their
fenix001 [56]

Answer:

The 90% confidence interval for the mean time required by all college graduates is between 5.36 years and 5.44 years.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.9}{2} = 0.05

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.05 = 0.95, so z = 1.645

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.645*\frac{1.9}{\sqrt{4500}} = 0.04

The lower end of the interval is the sample mean subtracted by M. So it is 5.4 - 0.04 = 5.36 years.

The upper end of the interval is the sample mean added to M. So it is 5.4 + 0.04 = 5.44 years.

The 90% confidence interval for the mean time required by all college graduates is between 5.36 years and 5.44 years.

3 0
3 years ago
(Ill give brainliest)
Anna007 [38]

Answer:

522

Step-by-step explanation:

3 0
2 years ago
Emma buys a book and gives the clerk $13.00. How much did the book cost if her change is $0.33?​
AysviL [449]

Answer:

12.67

Step-by-step explanation:

13.00-0.33=12.67

7 0
3 years ago
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An online clothing company sells custom sweatshirts. The company charges ​$4.99 for shipping plus ​$20 for each sweatshirt. Writ
kap26 [50]

Answer:

20x+4.99=y

Step-by-step explanation:

Each sweatshirt cost $20, but we don't know how many sweatshirts someone will buy so we use X, representing the amount of sweatshirts. There is a shipping charge of $4.99, so we have to add that to the cost of the sweatshirts. 20x+4.99. Y is the total cost.

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In introduction you look for a pattern and then form an education guess or
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An educated guess or a estimation


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