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3 years ago

Which equations does the entire model represent? Choose ALL that are correct.

Mathematics

1 answer:

Georgia [21]3 years ago

4 0

Select all the apply

Thank me when your right

:)

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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

What is the greatest common factor of 35, 28, and 14?

Kaylis [27]

Answer:

I believe 7 is the GTF (greatest common factor)

7 0

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In the milkshake example, the price ($) of the milkshake is the

vlabodo [156]

Independent variable (im pretty sure sorry if im wrong)

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Hector earned $60 this week, which is 5 times the amount he earned last week. The model shows how much money he earned this week

Ede4ka [16]

It would be 5x?=60 because to find "?" you would need to divide 60 and 5. Since Hector earned 5 times what he did last week it would be modeled by 5 times "?"

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3 years ago

Sylvia walked 1 1/2 miles so far this morning. If she plans to wake a total of 2 1/3 miles, how far does she have to go yet?

Ghella [55]

Answer:

D)- Less than 1 Mile

Step-by-step explanation: as current= 1 1/2 Miles = 3/2 Miles

Total plans= 2 1/3= 7/3 Miles

Difference= (7/3)-(3-2)

= 5/6 Miles

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3 years ago

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