Answer:
A. An analog audio signal is measured at regular intervals. Each measurement is stored as a sample, which is represented at the lowest level as a sequence of bits.
Explanation:
An audio signal can be defined as a representation of sound, either as an analog or digital signals. An analog audio signal refers to a continuous signal that is represented by a changing level of quantity such as voltage with respect to time.
Hence, the statement which best explains how an analog audio signal is typically represented by a computer is that, an analog audio signal is measured at regular intervals i.e it's a time varying quantity. When its measured using a particular measuring device such as audio analyzer, each measurement is stored as a sample, which is then represented at the lowest level as a sequence of bits such as 16kbps, 32kbps, 64kbps, 96kbps, 128kbps, 196kbps, and 320kbps. Kbps means kilobits per seconds.
<h3>Answer:</h3>
- A — 1
- B — ∑[k=0..2] 15Ck(.24^k)(.76^(15-k))
- D — 12 and 3.1
- A — 0.1091
- B — 0.83 ...
<h3>Explanation:</h3>
1. The probability is 0.52 that the officer will pull over a driver and then the expected number more. So, if x is the expected number of drivers pulled over until one is not texting, we have ...
... x = 0.52(1+x)
... 0.48x = 0.52
... x = 0.52/0.48 = 13/12 = 1 1/12 ≈ 1 . . . . matches selection A
(<em>Comment on this result</em>: I find it interesting that these are the odds in favor of finding a driver who texts. That is, if the probability of texting is 0.98, the odds are 49:1 that a driver will be texting, and the expected number of pull-overs is 49.)
2. The probability of at most 2 being cured is the probability of 0, 1, or 2 being cured. You need to add up those probabilities. The sum in answer selection B does that.
3. The mean of a binomial distribution is ...
... μx = np = 60·0.2 = 12
... σx = √(np(1-p)) = √(12·0.8) ≈ 3.0984
These match selection D.
4. 20C14(0.8^14)(0.2^6) = 38760·.043980·0.000064 ≈ 0.109100 . . . matches A
5. mean(x) = 0.94; mean(x^2) = 1.58, so ...
... σx = √(1.58 -0.94²) ≈ 0.83 . . . . matches selection B
1 I think it is the right answer
Answer:
The correct option is "the base of the notation".
Explanation:
Consider the provided Scientific notation .
In order to write very large or small numbers, we use Scientific notation. Scientific notation means you write a numeral to power as a number multiplied by 10.
In order to get the scientific notation, the exponent of 10 is the number of places you must shift the decimal point. Where 10 is the base of the notation. We move the decimal point one place for each power of 10.
Hence, the correct option is "the base of the notation".