Solve. - 7 1/2 ÷ ( 4 1/2 - 5 1/8 ) = ?
2 answers:
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Answer: <em>r</em> represents a significant linear correlation.
Step-by-step explanation:
GIven : Linear correlation coefficient: r = 0.543
Sample size: n= 25
Significance levle:
Degree of freedom : n-2 = 25-2=23
Now, we check <em>r</em> critical value table for value with df = 23 and .
Critical value = ±0.396 [From <em>r</em> critical value table]
Since r = 0.543 > 0.396, that means there is significant linear correlation.
Hence, <em>r</em> represents a significant linear correlation.
Answer:
(a) A = {... -23, -16, -9, -2, 5, 12, 19, 26, ....}
(b)
Solution:
For two integers x and y to be congruent, we know that:
If 't' divides y - x, we say that x is congruent to y modulo t, written x ≡ y mod t.
Now,
In roster form, we include each element in the representation of the set.
In set-builder form, we use mathematical notation and properties of the elements of the set.
Now,
As per the question;
(a) To represent all the integers congruent to 5 (mod 7) by roaster method of a set A (say):
where
such that
x ≡ 5 (mod 7)
Then
A = {... -23, -16, -9, -2, 5, 12, 19, 26, ....}
(b) In set builder form,