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3 years ago

PLEASE PLEASE I NEED HELP ON THIS ASAP

Mathematics

2 answers:

kolbaska11 [484]3 years ago

8 0

Answer:

D/Its the last one: 2 and 7.

Step-by-step explanation:

Interior angles are usually angles on the inside and on the same line like 4 and 7, and 2 and 5. however ALTERNATE interior angles are angles that are still on the inside, but are across from each other, like 2 and 7, or 4 and 5.

Alisiya [41]3 years ago

6 0

Answer:

Step-by-step explanation:

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3. Using the sample size of 800 and the proportion 0.47, calculate the margin of error associated with the estimate of the propo

salantis [7]

Answer:

$ME=1.96\sqrt{\frac{0.47 (1-0.47)}{800}}=0.0346$

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

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".

The population proportion have the following distribution

$p \sim N(p,\sqrt{\frac{p(1-p)}{n}})$

Solution to the problem

We assume for this case a confidence level of 95%. In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 95% of confidence, our significance level would be given by $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ . And the critical value would be given by:

$z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96$

The confidence interval for the mean is given by the following formula:

$\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$

The margin of error for the proportion interval is given by this formula:

$ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$ (a)

And if we replace the values obtained we got this:

$ME=1.96\sqrt{\frac{0.47 (1-0.47)}{800}}=0.0346$

6 0

3 years ago

Anthony travels from Page Az to Flagstaff Az at a rate of 60 miles per hour in 2.5 hours. How far is Flagstaff from Page?( Show

DerKrebs [107]

Answer:

150 miles

Step-by-step explanation: The distance from Page to Flagstaff can be shown with the equation d = r * t, or distance = rate * time. In this case, the rate is 60 mph, and the rate is 2.5 h. Plugging that into the equation you get d = 2.5(60) = 150, giving you your distance.

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3 years ago

a and b together can do a work in 10 days B and C together can do the same work in 15 days a b and c together can do the same wo

trasher [3.6K]

Answer:

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3 years ago

And art teacher has 1 and 1/2 pounds of red clay and 3/4 lb of yellow play the teacher mixes the red clay in the yellow clay tog

aksik [14]

Answer:

There is a total of 2 1/4 lb of clay. Divide that amongst the class.

8 0

4 years ago

Given the functions f(x) = 7x 13 and g(x) = x2 2, which of the following functions represents f[g(x)] correctly? f[g(x)] = 7x2 2

brilliants [131]

Answer:

fg(×)=22fx

Step-by-step explanation:

I hope it help

7 0

2 years ago