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3 years ago

Please solve this 5 * 3/5=

Mathematics

2 answers:

Basile [38]3 years ago

5 0

Answer:

Step-by-step explanation:

jekas [21]3 years ago

4 0

Answer:

Step-by-step explanation:

5(3/5)

=(5/1)*(3/5)

=(5*3)/(1*5)

=15/5

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Answer:

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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:

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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:

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

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Part b

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

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

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

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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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Step-by-step explanation:

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