Sound is measured in decibels, using the formula d = 10 log() where P is the intensity of 20. How many times more intense is this horn compared to the weakest sound heard to the human ear?
The solution is

Sound is measured in decibels, using the formula d = 10 log() where P is the intensity of

20. How

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Ответ:

Ruby2480

21.09.2021

Mathematics

Mean of the sample μₓ = 95

Standard deviation of the sample (S) = 0.5

Step-by-step explanation:

Step(i):-

Given sample size 'n' = 25

Mean of the Population μ = 95 calories

Standard deviation of the Population = 2.5 calories

Step(ii):-

Mean of the sample μₓ = μ

Mean of the sample μₓ = 95

Standard deviation of the sample

$= \frac{S.D}{\sqrt{n} } = \frac{2.5}{\sqrt{25} } =0.5$

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Sound is measured in decibels, using the formula d = 10 log() where P is the intensity of 20. How many times more intense is this horn compared to the weakest sound heard to the human ear? The solution is