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Alik [6]
3 years ago
8

Determine the horizontal change of a line with an x-intercept at (-5, 0) and a y-intercept at (0, 4). Type a numerical answer in

the space provided. If necessary, use the / key as a fraction bar. Do not type spaces in your answer.
a0
Mathematics
1 answer:
klasskru [66]3 years ago
3 0

Answer:

  5

Step-by-step explanation:

The difference of x-values is the horizontal change:

  0 -(-5) = 5

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Insurance companies are interested in knowing the population percent of drivers who always buckle up before riding in a car. Whe
kherson [118]

Answer:

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}  

n=\frac{0.5(1-0.5)}{(\frac{0.03}{1.96})^2}=1067.11  

And rounded up we have that n=1068

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

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 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 on this case we have that ME =\pm 0.03 and we are interested in order to find the value of n, if we solve n from equation (a) we got:  

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)

We don't have a prior estimation for the proportion \hat p so we can use 0.5 as an approximation for this case  

And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.03}{1.96})^2}=1067.11  

And rounded up we have that n=1068

5 0
2 years ago
Can someone help me ?
Murrr4er [49]

Answer:

=t4+35t3−3t2−9.......

8 0
2 years ago
Can someone pls help me
Eduardwww [97]

Answer:

<h2>It is 159.1 in^2 </h2>

Step-by-step explanation:

I hope that is useful for you

8 0
2 years ago
For a diamond problem what two numbers' sums equal 31 and their product is 234?
s344n2d4d5 [400]

Let

x-------> the first number

y------> the second number


we know that

x+y=31

x=31-y

equation 1


x*y=234

equation 2


substitute equation 1 in equation 2

(31-y)*y=234\\ 31y-y^{2} =234\\ -y^{2} +31y-234=0



using a graph tool-----> to resolve the second order equation

see the attached figure


the solution is

13 and 18

8 0
2 years ago
Read 2 more answers
What is 251,031 rounded to the nearest thousand
Sloan [31]
The answer is <span>251,000</span><span />
7 0
2 years ago
Read 2 more answers
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