Answer:
d, a, e, c, b
Step-by-step explanation:
50% of 30 is 15. 50% of anything is its half
(5 - 2i)(1 - 2i) You can solve this as though it was (x - 2)(x + 3): use foil
F: 5*1 = 5
O: 5 *(-2i) = - 10i
I : -2i * (1) = - 2i
L: (-2i)(-2i) This may take a bit. There's a few signs hanging around.
L: (-2 * -2)*(i * i)
L: 4 (i *i)
L: 4(-1)
L: - 4 So combine these results.
FOIL: 5 - 10i - 2i - 4 Group the like terms
FOIL: 5 - 4 - 10i - 2i Now collect them
FOIL: 1 - 12i <<<<<<< Answer
<u>Use Chebyshev's Theorem to 88.89 % </u><u> the percentage of gasoline stations that had prices within 3 standard deviation of the mean.</u>
What is the Chebyshev's theorem?
- Chebyshev's Theorem estimates the minimum proportion of observations that fall within a specified number of standard deviations from the mean.
- This theorem applies to a broad range of probability distributions.
- Chebyshev's Theorem is also known as Chebyshev's Inequality.
By Chebyshev's inequality, for any distribution at least
* 100 percentage of values falls within k standard deviation about mean .
here k=3 . Apply this to equation and find percentage that falls within 3 standard deviation about mean.
= 88.89
So, 88.89 % of gasoline station had price within 3 standard deviation about mean .
Learn more about Chebyshev's inequality
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