The intensity, or loudness, of a sound can be measured in decibels (dB), according to the equation I(dB)=10log[1/10], where I &a
2 answers:
For this case we have the following equation:
Where,
I: <span>the intensity of a given sound
I0: </span><span> the threshold of a hearing intensity
</span>Substituting values in the given equation we have:
<span />
<span />Rewriting the equation we have:
<span />
<span />Then, by properties of logarithm we have:
<span />
<span />Finally we have:
<span />
<span />Answer:
T<span />he intensity, in decibles, [I(dB)], when I=10^8(I0) is:
D.80
Where,
I: <span>the intensity of a given sound
I0: </span><span> the threshold of a hearing intensity
</span>Substituting values in the given equation we have:
<span />
<span />Rewriting the equation we have:
<span />
<span />Then, by properties of logarithm we have:
<span />
<span />Finally we have:
<span />
<span />Answer:
T<span />he intensity, in decibles, [I(dB)], when I=10^8(I0) is:
D.80
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Answer: simple random sampling
Step-by-step explanation:
- A simple random sampling is a sampling method in which individuals are chosen randomly from the population. In this each individual has equal chances to get selected.
- If N is the population size , then for any individual , the chances for getting selected is
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As per given , the company randomly selects 50 customers directly from the database without applying any further steps and asks them about their level of satisfaction with the company.
Thus , the sampling technique used here is simple random sampling.