Mathematics: Wavelength and Frequency Determine the ratio of the notes to middle C. Express the answers as a simple integer ratio. (Ratios will be approximate due to rounding.) The smaller the numbers in the ratio, the greater the consonance. Decide which of the notes when played with middle C would have the greatest dissonance. a. G and C b. B and C c. D and C d. E and C Please select the best answer from the choices provided

Wavelength and Frequency Determine the ratio of the

Ответ:

nickthequick

11.05.2020

Complete Question

One consequence of the popularity of the internet is that it is throughout to reduce television watching. Suppose that a random sample of 55 individuals who consider themselves to be avid Internet users results in a mean time of 2.10 hours watching television on a weekday. The standard deviation is $\sigma = 1.93$

Required:

Determine the likelihood of obtaining a sample mean of 2.10 hours or less from a population whose mean is presumed to be 2.45 hours.

The likelihood is $P(X \le 2.10 ) = 0.08931$

Step-by-step explanation:

From the question we are told that

The sample size is n = 55

The population mean is $\mu = 2.45 \ hours$

The random mean considered $\= x = 2.10 \ hours$

Generally the standard error of mean is mathematically represented as

$\sigma _{\= x } = \frac{\sigma }{ \sqrt{n} }$

=> $\sigma _{\= x } = \frac{1.93 }{ \sqrt{55} }$

=> $\sigma _{\= x } = 0.2602$

The likelihood of obtaining a sample mean of 2.10 hours or less from a population whose mean is presumed to be 2.45 hours is mathematically represented as

$P(X \le 2.10 ) = 1 - P(X 2.10 ) = 1 - P( \frac{X - \mu }{\sigma_{\= x }} \frac{ 2.10 - 2.45}{ 0.2602} )$