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3 years ago

The distance from 0 on a number line represents the _____________ of the number.

Mathematics

1 answer:

BigorU [14]3 years ago

7 0

The distance from 0 on the number line represents the absolute value of the number

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Unoccupied seats on flights cause airlines to lose revenue. Suppose a large airline wants to estimate its average number of unoc

Bingel [31]

Answer:

We need a sample size of at least 719

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:

$\alpha = \frac{1-0.95}{2} = 0.025$

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 $1-0.025 = 0.975$ , so $z = 1.96$

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.

How large a sample size is required to vary population mean within 0.30 seat of the sample mean with 95% confidence interval?

This is at least n, in which n is found when $M = 0.3, \sigma = 4.103$ . So

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

$0.3 = 1.96*\frac{4.103}{\sqrt{n}}$

$0.3\sqrt{n} = 1.96*4.103$

$\sqrt{n} = \frac{1.96*4.103}{0.3}$

$(\sqrt{n})^{2} = (\frac{1.96*4.103}{0.3})^{2}$

$n = 718.57$

Rouding up

We need a sample size of at least 719

6 0

3 years ago

If f(x)=2x-4 find f(m+1)

soldier1979 [14.2K]

Is thistles ok algebra one or two please mark me brainlist

5 0

2 years ago

What is the value of x?<br><br> x + 13 = 59

Volgvan

Answer:

x=46

Step-by-step explanation:

subtract 13 from both sides

x=59-13=46

7 0

3 years ago

Which undefined term is used to define an angle ?

9966 [12]

the answer will be point

8 0

3 years ago

Read 2 more answers

If x = 2.5, 5x = ____. (Input decimals only, such as 12.7.)

Gekata [30.6K]

Answer:

12.5

Step-by-step explanation:

x = 2.5

5( 2.5 )

12.5

hopefully this helps you out

5 0

3 years ago