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3 years ago

I don’t know what to do this is the last question!!!

Mathematics

1 answer:

Verdich [7]3 years ago

3 0

Answer:

5/8 miles

Step-by-step explanation:

2 1/4 - 2 5/8 = 2 2/8 - 2 5/8 = 5/8

Hope this helps!

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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

Which symbol makes the following TRUE?

olchik [2.2K]

Option A:

6 – 4(3) < 5 – 10

Solution:

Given expression is 6 – 4(3) ____ 5 – 10.

Let us first simplify the expression.

Take left side expression.

⇒ 6 – 4(3)

⇒ 6 – 12

⇒ –6

Take right side expression.

⇒ 5 – 10

⇒ –5

To find which symbol makes the expression true.

In negative the highest number is the lowest in value.

–6 < –5

⇒ 6 – 4(3) < 5 – 10

Option A is the correct answer.

Hence 6 – 4(3) < 5 – 10.

8 0

3 years ago

Please help!

UNO [17]

There were about 18 people younger than 15 in the park.

4 0

4 years ago

Find the equation of the straight line passing through the points (4; 2) and (2; 4).

Alecsey [184]

Use point-slope form.

But first let's find the slope.

(4, 2), (2, 4)

m = y2-y1/x2-x1

m = (4 - 2)/(2 - 4)

m = 2/-2

m = -1

So this is the slope, now we can plug this into the equation along with any point.

y - y1 = m(x - x1)

Where y1 is the y-value of the point, x1 is the x-value, and 'm' is the slope.

Let's plug in point (4, 2):

y - 2 = -1(x - 4)

This can be one of your options.

Distribute -1:

y - 2 = -x + 4

Add 2 to both sides:

y = -x + 6

This can be another of your options.

Add 'x' to both sides:

x + y = 6

This can be another of your options.

8 0

3 years ago

Read 2 more answers

GeoGebra Task 8

BlackZzzverrR [31]

Answer:

quadrilateral JDLK

Step-by-step explanation:

It didn't change size

It didn't change angle values or side lengths

It is the same shape, which means it is a rigid transformation

5 0

2 years ago