Mark Gershon, owner of a musical instrument dis-tributorship, thinks that demand for guitars may be related to the number of television appearances by the popular group Maroon 5 during the previous month.
Mark has collected the data shown in the following table:
| Marooon 5 Apperances |
3
|
3
|
8 |
7
|
7
|
6
|
| Demand for Guitars |
3 |
6 |
6
|
4
|
11 |
8
|
?b) Using the? least-squares regression? method, the equation for forecasting is ?(round your responses to four decimal ?places)?: Y? = .....?+ ......... x ?
c) The estimate for guitar sales if Maroon 5 performed on TV 11 times? = ...... sales ?(round your response to two decimal? places). ?
d) The correlation coefficient ?(r?) for this model? =.... (round your response to four decimal? places).
e)The coefficient of determination ?(r squared ?) for this model? = ...... ?(round your response to four decimal? places).
f) The percentage of variation in sales that can be explained by TV appearances? =....... ?(round your response to two decimal? places).