In a hearing test, subjects estimate the loudness (in decibels) of sound, and the results are;...

In a hearing test, subjects estimate the loudness (in decibels) of sound, and the results are; 12, 68, 74, 66, 37, 52, 71, 90, 65, 76, 73, 22. What are the outer fences?

Expert Solution

milcah answered 1 year ago

The rule of thumb for loudness is that the power of a sound must be increaed...

The rule of thumb for loudness is that the power of a sound must be increaed by a factor of _____ to sound twice as loud. A. 2 B. 12 C. 20 D. 10 E. 100

This is a list of some of the steps in the process of hearing a sound....

This is a list of some of the steps in the process of hearing a sound. Put them in cause-and-effect order from first to last. A. K+ channels in the hair cell membranes open B. The incus (ear bone) vibrates C. The hair cell releases neurotransmitter D. Pressure waves pass through the air in the ear canal E. Afferent neurons transmit action potentials through the cochlear nerve F. The hair cell membrane is depolarized G. Pressure waves travel through the...

For a person with normal hearing, the faintest sound that can be heard at a frequency...

For a person with normal hearing, the faintest sound that can be heard at a frequency of 400 Hz has a pressure amplitude of about 6.0×10^−5 Pa. Part A) Calculate the intensity of this sound wave at 20 ∘C. Part B) Calculate the sound intensity level of this sound wave at 20 ∘C. Part C) Calculate the displacement amplitude of this sound wave at 20 ∘C.

Using your understanding of the audibility curve, explain how sound frequency might affect perception of loudness....

Using your understanding of the audibility curve, explain how sound frequency might affect perception of loudness. How does the audibility curve demonstrate this?

1. Describe how sound waves with volume and pitch turn to action potential and “hearing”. How...

1. Describe how sound waves with volume and pitch turn to action potential and “hearing”. How is the ear drum used to amplify sound? How is fluid used to stimulate the hair cells of the inner ear and, hence, create an action potential? 2.Describe how light waves of intensity and color turn to action potential and “sight”. Which cells are sensitive to brightness and color, which to peripheral vision and dim movements? How does light actually make and action potential...

The formula for measuring sound intensity in decibels D is defined by the equation D = 10log(I/I0) where I is the intensity of the sound in watts per square meter and I0 = 10−12 is the.

The formula for measuring sound intensity in decibels D is defined by the equation D = 10log(I/I0) where I is the intensity of the sound in watts per square meter and I0 = 10−12 is the lowest level of sound that the average person can hear. How many decibels are emitted from a rock concert with a sound intensity of 4.7 · 10−1 watts per square meter?

In a test of weight loss programs, 160 subjects were divided such that 32 subjects followed...

In a test of weight loss programs, 160 subjects were divided such that 32 subjects followed each of 5 diets. Each was weighed a year after starting the diet and the results are in the ANOVA table below. Use a 0.025 significance level to test the claim that the mean weight loss is the same for the different diets. Source of Variation SS df MS F P-value F crit Between Groups 554.416 4 138.60402 4.4411 0.001999 2.869395 Within Groups 4837.455]...

Above are the results of a drug trial. The scores are given for subjects in two...

Above are the results of a drug trial. The scores are given for subjects in two different conditions – a placebo and an herbal supplement to improve memory. The scores represent a number of words correctly recalled after listening to a story. Please run the appropriate test in SPSS using a p-value or choosing the critical value from the t-table. If the results are statistically significant, calculate effect size by hand using Cohen’s d. placebo herbal supplement 12 13 14...

We wish to test if SBP changed after treatment for subjects in the treatment arm. Test...

We wish to test if SBP changed after treatment for subjects in the treatment arm. Test H 0 : μ t = μ c versus H a : μ t 6 = μ c for patients in the treatment arm using R function t.test . 44. What is the mean change in SBP (pre - post) in the treatment group? – a) -4.230 – b) 2.212 – c) 0.543 – d) -0.654 45. What is the 95% confidence interval for...

Calculate the wavelengths in air at 20°C for sounds in the maximum range of human hearing. The speed of sound in air is 343 m/s.

Calculate the wavelengths in air at 20°C for sounds in the maximum range of human hearing. The speed of sound in air is 343 m/s.Part A Calculate the wavelength of a 20-Hz wave.Part B Calculate the wavelength of a 20,000-Hz wave. Part C What is the wavelength of a 19-MHz ultrasonic wave?

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