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IceJOKER [234]
3 years ago
6

3/4*5. u will get followed answer this

Mathematics
1 answer:
Alenkinab [10]3 years ago
7 0

\bf 5\cdot \cfrac{3}{4}\implies \cfrac{5\cdot 3}{4}\implies \cfrac{15}{4} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ 15\div 4\implies \stackrel{quotient}{\boxed{3}}~~\stackrel{remainder}{3}~\hfill \cfrac{15}{4}\implies \boxed{3}\frac{3}{4}

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d.9

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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:

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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