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blsea [12.9K]
3 years ago
11

A pooled variance is an estimated weighted variance made up of several different populations when the mean of each population ma

y be different, but one may assume that the variance of each population is the same.
a. True
b. False
Mathematics
1 answer:
Marta_Voda [28]3 years ago
4 0

Answer:

True

Step-by-step explanation:

Considering the above definition of Pooled Variance, the correct answer is TRUE.

This is because Pooled variance is used to determine the reasonable estimates of variance, where several repeated tests are expected at each value.

This helps to provide greater precision estimates of variance.

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Factor 24a^2b + 18abc
Bumek [7]
24a^2b + 18abc
=6ab(4a + 3c)

Hope this helps! :)
8 0
3 years ago
Mark the statement either true (in all cases) or false (for at least one example). If false, construct a specific example to sho
LUCKY_DIMON [66]

Answer with Step-by-step explanation:

We are given that v_1,v_2,..,v_4 are in R^4 and v_1,v_2,v_3 is linearly dependent then {v_1,v_2,v_3,v_4}[/tex] is also linearly dependent.

We have to find that given statement is true or false.

Dependent vectors:Dependent vectors are those vectors in which atleast one vector is  a linear combination of other given vectors.

Or If we have vectors x_1,x_2,....x_n

Then their linear combination

a_1x_1+a_2x_2+.....+a_nx_n=0

There exist at least one scalar which is not zero.

If v_1,v_2,v_3 are dependent vectors then

a_1v_1+a_2v_2+a_3v_3=0 for scalars a_1,a_2,a_3

Then , by definition of dependent  vectors

There exist a vector which is not equal to zero

If vector v_3 is a linear combination of v_1\;and \;v_2, So at least one of vectors in the set is a linear combination of others and the set is linearly dependent.

Hence, by definition of dependent vectors

{v_1,v_2,v_3,v_4} is linearly dependent.

Option B is true.

8 0
3 years ago
Plz help question 1 or 2
s344n2d4d5 [400]

Answer:

sorry dont know

Step-by-step explanation:

30 oite 904-=

7 0
3 years ago
A word problem for 3x+15=42
murzikaleks [220]

2 Possible Solutions:

The product of a number and three plus fifteen is 42

or

A number times three plus fifteen is 42.

6 0
3 years ago
Similar Polygons<br> Not quite sure how to get this question.
iris [78.8K]

Answer:

No

Step-by-step explanation:

We know that the 3-4-5 and 9-12-15 right triangles are similar. If you add 6 units to the length of each side of both of these triangles, you obtain 9-10-11 and 15-18-21 triangles, which are not similar since 9/15 is not equal to 10/18.

4 0
2 years ago
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