Physics, 05.07.2019 17:10 Albertrami2251
Noise levels at 5 airports were measured in decibels yielding the following data: 147,123,119,161,136 construct the 99% confidence interval for the mean noise level at such locations. assume the population is approximately normal. calculate the sample standard deviation for the given sample data. round your answer to one decimal place.
Answers: 2
Physics, 22.06.2019 22:00, jayonelijah
Ultraviolet radiation is dangerous because it has a high enough energy to damage skin cells. what is the best explanation of the relationship between wavelength and wave energy? a) wave energy is related only to frequency, not wavelength. b) longer wavelengths have lower frequencies but higher energy. c) the shorter the wavelength, the lower the frequency and the higher the energy. d) the shorter the wavelength, the higher the frequency and the higher the energy.
Answers: 3
Noise levels at 5 airports were measured in decibels yielding the following data: 147,123,119,161,1...
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