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3 years ago

6x + 3y = 18

Mathematics

1 answer:

Inessa [10]3 years ago

8 0

Answer:

I HAVE 2 OPTIONS

A OR B

I THINK

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Calculating the degrees of freedom, the sample variance, and the estimated standard error for evaluations using the t statistic

Yuliya22 [10]

Answer:

a) For the first part we have a sample of n =10 and we want to find the degrees of freedom, and we can use the following formula:

$df = n-1= 10-1=9$

d.9

b) $s^2 = \frac{SS}{n-1}= \frac{600}{41-1}= 15$

a.15

c) For this case we have the sample size n = 25 and the sample variance is $s^2 =400$ , the standard error can founded with this formula:

$SE = \frac{s^2}{\sqrt{n}}= \frac{400}{\sqrt{25}}= 80$

Step-by-step explanation:

Part a

For the first part we have a sample of n =10 and we want to find the degrees of freedom, and we can use the following formula:

$df = n-1= 10-1=9$

d.9

Part b

From a sample we know that n=41 and SS= 600, where SS represent the sum of quares given by:

$SS = \sum_{i=1}^n (X_i -\bar X)^2$

And the sample variance for this case can be calculated from this formula:

$s^2 = \frac{SS}{n-1}= \frac{600}{41-1}= 15$

a.15

Part c

For this case we have the sample size n = 25 and the sample variance is $s^2 =400$ , the standard error can founded with this formula:

$SE = \frac{s^2}{\sqrt{n}}= \frac{400}{\sqrt{25}}= 80$

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3 years ago

Draw a Venn Diagram that represents the unions and intersections of the sets.

Alchen [17]

Okay so you know what a venndiagram is right? It's a diagram with two overlapping circles. One thing is on one side and the other is on the other side. In the middle you put the things that are shared between the two objects. In this case you would put the shared numbers in the middle and designate a side for both sets. Hope that helps

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3 years ago

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X is an integer and satisfies the following inequality. 5(x+4)<32 What is the maximum possible value for x?

mars1129 [50]

Answer:

c.2

Step-by-step explanation:

5(x+4)<32

5(2+4)<32

10+20<30

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3 years ago

Explain answer??????????????????

Julli [10]

Answer:

the answer is a

Step-by-step explanation:

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Find the volume of a cube that will hold sixty-four 4.19 in^3 toy bouncy balls

Charra [1.4K]

You he answer is 512 in3

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3 years ago