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Nitella [24]
3 years ago
15

Jndfsnflsdnfjsnskjfnsjkdf sgg

Mathematics
1 answer:
Firlakuza [10]3 years ago
5 0
Yes that is the answer
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Can you help me please
Nitella [24]

Answer:

i cant read that

Step-by-step explanation:

8 0
2 years ago
List the term(s) in the following expression:<br> 2x2–5xy + 8y4
eduard

Answer:

8

y

4

+

2

x

2

−

5

x

y

Step-by-step explanation:

3 0
3 years ago
Test the hypothesis using the P value approach. Be sure the verify the requirements of the test.
Andreas93 [3]

Answer:

p_v =2*P(z  

If we compare the p value and using the significance level given \alpha=0.05 we have p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can said that at 5% of significance the proportion is not significantly different from 0.77.  

Step-by-step explanation:

1) Data given and notation

n=500 represent the random sample taken

X=380 represent the number of people with some characteristic

\hat p=\frac{380}{500}=0.76 estimated proportion of adults that said that it is morally wrong to not report all income on tax returns

p_o=0.76 is the value that we want to test

\alpha=0.05 represent the significance level

Confidence=95% or 0.95

z would represent the statistic (variable of interest)

p_v represent the p value (variable of interest)  

2) Concepts and formulas to use  

We need to conduct a hypothesis in order to test the claim that the true proportion is 0.7 .:  

Null hypothesis:p=0.77  

Alternative hypothesis:p \neq 0.77  

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.

<em>Check for the assumptions that he sample must satisfy in order to apply the test </em>

a)The random sample needs to be representative: On this case the problem no mention about it but we can assume it.

b) The sample needs to be large enough

np_o =500*0.77=385>10

n(1-p_o)=384*(1-0.77)=115>10

3) Calculate the statistic  

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

z=\frac{0.76-0.77}{\sqrt{\frac{0.77(1-0.77)}{500}}}=-0.531  

4) 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=0.05. The next step would be calculate the p value for this test.  

Since is a bilateral test the p value would be:  

p_v =2*P(z  

If we compare the p value and using the significance level given \alpha=0.05 we have p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can said that at 5% of significance the proportion is not significantly different from 0.77.  

6 0
3 years ago
hi I was just a little bit of time with my module and I didn't know what is answer of the module now please please be sure of th
GREYUIT [131]

1. 5 x 4 = A. 20

2.

\frac{2}{5}  \times 25 = 2 \times 5 = 10

the answer is D. 25

3.

\frac{3}{5}  \div 15 =  \frac{3}{5}  \times  \frac{1}{15}  =  \frac{1}{5}  \times  \frac{1}{5}  =  \frac{1}{25}

the answer is A. 1/25

4.

4 \div  \frac{1}{2}  = 4 \times  \frac{2}{1}  = 8

the answer is C. 8

5.

9 \div  \frac{1}{3}  = 9 \times  \frac{3}{1}  = 27

the answer is D. 27

6.

20 \div  \frac{1}{4}  = 20 \times  \frac{4}{1}  = 80

the answer is D. 80

7.

\frac{9}{10}  \div  \frac{1}{2}  =  \frac{9}{10}  \times  \frac{2}{1}  =  \frac{18}{10}  =  \frac{9}{5}  = 1 \frac{4}{5}

the answer is C. 1 4/5

8.

9 \div  \frac{3}{2}  = 9 \times  \frac{2}{3}  =  \frac{18}{ 3}  = 6

the answer is B. 6

9.

\frac{3}{4}  \div  \frac{3}{8}  =  \frac{3}{4}  \times  \frac{8}{3}  = 2

the answer is A. 2

3 0
3 years ago
82. Close shave Which of two brands (X or Y) of electric
KiRa [710]
Yes make. lavas labs ova w labs. alan s slabs. sks labs. siena. alana. alana w is a whelks d fndkrn darkens kebab w eke. sm she. sm sm sm s is sks s sm s sm sm s sm. and. sm sks dinks sks sks sj she s she when w
7 0
3 years ago
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