Y = 3x
{}^{2} + 9x + 6" alt="y =3x {}^{2} + 9x + 6" align="absmiddle" class="latex-formula">
+ 9x + 6
+ 9x + 6
1 answer:
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Answer:
The mean and standard deviation of the corrected pH measurements are 6.63 and 3.8025 respectively.
Step-by-step explanation:
We can correct the values of the mean and standard deviation using the properties of the mean and the variance.
To the original value X we have to add 0.2 and multiply then by 1.3 to calculate the new and corrected value Y:
The mean and standard deviation of the original value X are 4.9 and 1.5 respectively.
Then, we can apply the properties of the mean as:
For the standard deviation, we apply the properties of variance:
The properties that have been applied are:
A) x + 8 = 28
x = 28 - 8
x = 20
B) y - 4 = 30
y = 30 + 4
y = 34
C) s + 2s = 36
3s = 36
s = 12
D) t - t + 4t = 16
4t = 16
t = 4
E) 5a = 15
a = 3
F) 8x - x = 21
7x = 21
x = 3
Answer:
see explanation
Step-by-step explanation:
For words per minute divide 228 by 4
words per minute = ( = 57 )