<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B7%7D%7B4%7D%20%3D%20%5Cfrac%7B21%7D%7B14%7D%20" id="TexFormula1" title=" \frac{7}

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3 years ago

{4} = \frac{21}{14} " alt=" \frac{7}{4} = \frac{21}{14} " align="absmiddle" class="latex-formula">
Determine if the following ratios form a porportion.

Mathematics

1 answer:

aev [14]3 years ago

8 0

This looks super duper hard wish I can solve it out

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Identify the CONCLUSION of a hypothesis test of the following claim and sample data: Claim: "The average annual household income

Hatshy [7]

Complete Question

The options for the above question is

a There is not sufficient evidence to warrant rejection of the claim.

b There is sufficient evidence to warrant rejection of the claim.

c There is sufficient evidence to support the claim.

d There is not sufficient evidence to support the claim.

Answer:

Option A is correct

Step-by-step explanation:

From the question we are told that

The population mean is $\mu =$ $47,500

The sample size is $n = 86$

The sample mean is $\= x =$ $48,061

The standard deviation is $\sigma =$ $2,351

The level of significance is $\alpha = 0.02$

The null hypothesis is

$H_o : \mu =$ $47,500

The alternative hypothesis is

$H_a : \mu \ne$ $47,500

The critical value of $\alpha$ from the t-Distribution table is $Z_{\frac{\alpha }{2} } = 2.326$

Now the test statistics is mathematically evaluated as

$t = \frac{\= x - \mu }{ \frac{\sigma }{\sqrt{n} } }$

substituting values

$t = \frac{48061 - 47500 }{\frac{2351}{\sqrt{86} } }$

$t = 2.21$

Now from the values obtained we can see that

$Z_{\frac{\alpha }{2} } > t$

hence we fail to reject the null hypothesis

Hence there is not sufficient evidence to warrant rejection of the claim

7 0

4 years ago

Please help and give details!

Fudgin [204]

Answer:

Step-by-step explanation:

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3 years ago

In circle T, what is the value of x?<br>18<br>45<br>50<br>90

Alika [10]

The answer will be 45 because it’s a right angle

6 0

3 years ago

Can some one please help me with this im having trouble. ?

dlinn [17]

So 12=total
7=blue
black=total-blue=12-7=5
black=5

1. 2/3 of 12 were taken out or 24/3 were taken out or 8 marbles were taken out
there is not enough info becasue it doesn't specify which ones were taken out

2. there is not enough info

3. not chosen=total-chosen=12-8=4 so 4 were chosen

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3 years ago

What is the sum of 762.69x12

Elodia [21]

What do you mean the sum? Do you mean the product?

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3 years ago