As depth increases PRP

What is the time of flight for flight for a structure at 6cm depth?

All of these are determined by sound source and medium  only  EXCEPT

What has the highest attenuation of these materials? 

What is the PRF in soft tissue, if depth is 10cm?

What is the decibel change if a signal strength is increased by a factor of 100

What is the attenuation coefficient of a 8MHz probe?

The product of attenuation coefficient and path length is defined as

The price of a particular brand of jeans has a mean of $37.99 and a standard deviation of $7. A sample of 49 pairs of jeans is selected. Use Excel to answer the following questions:a.What is the probability that the sample of jeans will have a mean price less than $40?b.What is the probability that the sample of jeans will have a mean price between $38 and $39?c.What is the probability that the sample of jeans will have a mean price within $3 of the population mean? ​

The following data represent the number of flash drives sold per day at a local computer shop and their prices:Price (x)Units Sold (y)$343  364  326  355  309  382  401​a.Develop a least squares regression line and explain what the slope of the line indicates.b.Compute the coefficient of determination and comment on the strength of relationship between x and y. c.Compute the sample correlation coefficient between the price and the number of flash drives sold. Use α = 0.01 to test the relationship between x and y. ​