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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

orchestra answered 3 years ago
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