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Diano4ka-milaya [45]
3 years ago
8

set the equation up for "Eight less than the square of a number is the same as adding the number and four"

Mathematics
1 answer:
TEA [102]3 years ago
5 0
X^2-8 = x+4 is your answer!
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Use the graph of f(x) to graph y= f(x+1)-2
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What graph i dont see a graph in this question
5 0
3 years ago
Mr. Beber feeds his dog 1/5 of a cup of dog food each day. How long will 9 cups of dog food last?
m_a_m_a [10]

Answer:

45 days

Step-by-step explanation:

<u>Step 1:  Determine how long it will last</u>

(9 cups) * (5 days / cup)

45 days

Answer: 45 days

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2 years ago
If a 1 could 1 could a 1 sit on a 2 when a 2 eats a 3 after the 3 sits on 1?
jok3333 [9.3K]

Answer:

no, 2 would be sitting on 1

Step-by-step explanation:

Download docx
7 0
3 years ago
According to a Washington Post-ABC News poll, 331 of 502 randomly selected U.S. adults interviewed said they would not be bother
k0ka [10]

Answer:

z=\frac{0.659 -0.5}{\sqrt{\frac{0.5(1-0.5)}{502}}}=7.124  

p_v =P(z>7.124)=5.24x10^{-13}  

So the p value obtained was a very low value and using the significance level given \alpha=0.05 we have p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 5% of significance the proportion of interest is significantly higher than 0.5.  

Step-by-step explanation:

Data given and notation

n=502 represent the random sample taken

X=331 represent the adults that said they would not be bothered if the NAtional security agency

\hat p=\frac{331}{502}=0.659 estimated proportion of people who would not be bothered if the NAtional security agency

p_o=0.5 is the value that we want to test

\alpha=0.01 represent the significance level

Confidence=99% or 0.99

z would represent the statistic (variable of interest)

p_v represent the p value (variable of interest)  

Concepts and formulas to use  

We need to conduct a hypothesis in order to test the claim that the true proportion is higher than the majority of 0.5:  

Null hypothesis:p\leq 0.5  

Alternative hypothesis:p > 0.5  

When we conduct a proportion test we need to use the z statistic, and the is given by:  

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

The One-Sample Proportion Test is used to assess whether a population proportion \hat p is significantly different from a hypothesized value p_o.

Calculate the statistic  

Since we have all the info requires we can replace in formula (1) like this:  

z=\frac{0.659 -0.5}{\sqrt{\frac{0.5(1-0.5)}{502}}}=7.124  

Statistical decision  

It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.  

The significance level provided \alpha=0.01. The next step would be calculate the p value for this test.  

Since is a right tailed test the p value would be:  

p_v =P(z>7.124)=5.24x10^{-13}  

So the p value obtained was a very low value and using the significance level given \alpha=0.05 we have p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can said that at 5% of significance the proportion of interest is significantly higher than 0.5.  

4 0
3 years ago
A birthday cake is being made using a cylindrical baking pan. The radius of the pan is 4 inches, and the height is 5 inches whic
Aleonysh [2.5K]

Answer:

This formula:

Cylinder Volume   =   π • r² • height

Volume = PI * 4  ^2 * 5

Volume = PI * 16 * 5

Volume = 251.327412  cubic inches

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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