Question
In: Statistics and Probability
Restaurant Revenue and Website Hits (n = 10 restaurants) Web Hits Revenue 1213 $12,113 1490 11,409...
| Restaurant Revenue and Website Hits (n = 10 restaurants) | ||||||
| Web Hits | Revenue | |||||
| 1213 | $12,113 | |||||
| 1490 | 11,409 | |||||
| 1365 | 14,579 | |||||
| 1455 | 11,605 | |||||
| 1269 | 12,308 | |||||
| 1632 | 12,320 | |||||
| 1323 | 13,225 | |||||
| 1865 | 13,652 | |||||
| 1590 | 13,893 | |||||
| 1878 | 13,896 | |||||
| Note: Data are for one week. | ||||||
-Obtain the regression equation. (Negative values should
be indicated by a minus sign. Round your answers to 4 decimal
places.)
Y = _______ X + ______
-Calculate R2. (Round your answer to 4
decimal places.)
R2 ______
-Calculate the degrees of freedom and t-critical for a
two-tailed t test for zero slope at α = .05.
(Round your answers to 2 decimal places.)
| Degrees of freedom | |
| t - critical | ± |
Solutions
Expert Solution
| X | Y | X*Y | X2 | Y2 | |
| 1213 | 12113 | 14693069 | 1471369 | 146724769 | |
| 1490 | 11409 | 16999410 | 2220100 | 130165281 | |
| 1365 | 14579 | 19900335 | 1863225 | 212547241 | |
| 1455 | 11605 | 16885275 | 2117025 | 134676025 | |
| 1269 | 12308 | 15618852 | 1610361 | 151486864 | |
| 1632 | 12320 | 20106240 | 2663424 | 151782400 | |
| 1323 | 13225 | 17496675 | 1750329 | 174900625 | |
| 1865 | 13652 | 25460980 | 3478225 | 186377104 | |
| 1590 | 13893 | 22089870 | 2528100 | 193015449 | |
| 1878 | 13896 | 26096688 | 3526884 | 193098816 | |
| Sum = | 15080 | 129000 | 195347394 | 23229042 | 1674774574 |
df = n-2 = 8
| t-crit | 2.306004 |
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