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4 years ago

{(-1, 2), (0, 2), (5, 2)} is a function. O True O False

Mathematics

2 answers:

jarptica [38.1K]4 years ago

6 0

True. When the points are plotted on a graph and connected, they pass the vertical line test. No x value is the same.

neonofarm [45]4 years ago

5 0

This would be true I believe

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(08.02)Which of the following graphs best represents the solution to the pair of equations below?

AnnZ [28]

Answer: The graph of the two equations is "A coordinate plane is shown with two lines graphed. y = −x − 1

Step-by-step explanation:

4 0

3 years ago

A clock's battery is running low. Every 6 hours, it slows down by 1 hour. By how much does it slow down in 1 hour?

mafiozo [28]

It would divide 1/6 which would translate into 0.16 with a repeating 6. I can’t do the work :(
sorry. hope it helped

7 0

3 years ago

Read 2 more answers

Is there a difference in the number of people who have an Annual pass to Disney World comparing people who live in Florida to th

zlopas [31]

Answer:

Fail to reject the null hypothesis.

Step-by-step explanation:

People who live in Florida and also have annual pass to Disney world is 221, sample size selected for group 1 is 350.

People who do not live in Florida and have annual pass to Disney world is 365, sample size selected for Group 2 is 650.

Group 1 sample proportion is : 221 / 350 = 0.6314

Group 2 sample proportion is 365 / 650 = 0.5615

Test statistics is 0.8317

Since test stats value is greater than the sample proportion significance level, we fail to reject the null hypothesis.

6 0

3 years ago

Which situation can be represented by 25 over 9

melisa1 [442]

Answer:

a fraction?

Step-by-step explanation:

question doesn't make sense bruh

4 0

4 years ago

Suppose that the population of the scores of all high school seniors who took the SAT Math (SAT-M) test this year follows a Norm

Vlad1618 [11]

Answer:

Confidence = $1-\alpha=1-0.01=0.99$

And then the confidence level would be given by 99%

Step-by-step explanation:

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Assuming the X follows a normal distribution

$X \sim N(\mu, \sigma)$

The distribution for the sample mean is given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

$\bar x =512$ represent the sample mean

$\sigma=100$ represent the population standard deviation

n= 100 sample size selected.

The confidence interval is given by this formula:

$\bar X \pm z_{\alpha/2} \frac{\sigma}{\sqrt{n}}$ (1)

The marginof error for this case is given by Me=25.76. And we know that the formula for the margin of error is given by:

$Me=z_{\alpha/2} \frac{\sigma}{\sqrt{n}}$

$25.76=z_{\alpha/2} \frac{100}{\sqrt{100}}$

And we can find the critical value $z_{\alpha/2}$ like this:

$z_{\alpha/2}=\frac{25.76(\sqrt{100})}{100}=2.576$

And we know that on the right tail of the z score =2.576 we have $\alpha/2$ of the total area. We can find the area on the right of the z score using this excel code:

"=1-NORM.DIST(2.576,0,1,TRUE)" or using a table of the normal standard distribution, and we got 0.004998= $\alpha/2$ , so then $\alpha=0.00498*2=0.009995 \approx 0.01$ , and then we can find the confidence like this:

Confidence = $1-\alpha=1-0.01=0.99$

And then the confidence level would be given by 99%

8 0

3 years ago