# Question 16 2 pts As people age they begin experience hearing loss. A study was done...

###### Question:  Question 16 2 pts As people age they begin experience hearing loss. A study was done on a random sample of 8 subjects to determine "comfort level of sound and age in people. The data are given here: Age, x(years) 15 25 35 45 55 65 75 85 Sound level y (decibels) 56 57 a a 68 74 78 85 xy = 29010, n= 7 x = 400, z = 24200, Ey=546, y = 37986, 550=4200 SSxy=1710, SSyy=721.5 SSE=25.2857 Se=2.052872 Assume the existence of a linear relationship between comfortable sound level and age, find the equation of the regression line relating y tox. what is slope B, Question 17 2 pts Assume the existence of a linear relationship between comfortable sound level and age, find the equation of the regression line relating y tox. what is y intercept point B = y - . . * Find =? Question 18 4 pts Find the predicted value of sound for a 60 year old person. Question 19 4 pts Construct a 90% prediction interval for the comfortable level of sound for a 60 year old person. Put only the margin of error. format is (X.XXX)
Question 19 4 pts Construct a 90% prediction interval for the comfortable level of sound for a 60 year old person. Put only the margin of error. format is (X.XXX) Question 20 4 pts Find the proportion of the comfortable level of sound that is accounted for by the ages of the people. (Hint: coefficient of determination r2) Question 21 4 pts Calculate the correlation coefficientr.

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