Question
In: Statistics and Probability
Music MogulsNicole, Aleenaand Shaked, aka N.A.S.!compiled the following data shown in the table. The table shows...
Music MogulsNicole, Aleenaand Shaked, aka N.A.S.!compiled the following data shown in the table. The table shows the predicted number of cd’s sold for a song, based on audience impressions, in hundreds of millions. Note: Number of cd’s sold are in hundreds of millions.
Audience Impressions (x): 28 13 14 24 20 18 14 24 17
Cd's sold (y): 19 7 7 20 6 2 5 25 12
b. Find “y-hat” (linear regression equation). Use 2 decimal places for “b0”and 1decimal for “b1” in your final answer.(8pts.)
c. Find the predicted number of cd’s sold for a song with 20 (hundred million) audience impressions.(4pts.)
d.Use the given data to find the linear correlation coefficient “r”.
Solutions
Expert Solution
b.
Yhat = -11. 07 + 1.2 X
c.
Yhat = -11. 07 + 1.2* 20 = 12.93
d.
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