Use Megastat and Data Analysis. REGRESSION: The delivery days of Walmart, Morgan
ID: 3266318 • Letter: U
Question
Use Megastat and Data Analysis. REGRESSION: The delivery days of Walmart, Morgantown, WV increase the more distant the providers. You have the Next 10 suppliers: Report the coefficient of correlation and coefficient of determination. Explain each one. Report the slope value (b 1) and indicate its economic significance Report the intercept value (b 0). Report the test statistic for the slope and indicate whether the slope Is statistically significant at 10%. Report the P-value of the intercept and indicate if the intercept is Statistically significant at 1%. saw. How do delivery days change if the distance increases by 200 Miles? If a new provider is located at 950 miles, how many Delivery days estimated?Explanation / Answer
data( as your comment below)
distance days
210 5
290 7
350 6
480 11
490 8
730 11
780 12
850 8
920 15
1010 12
Pearson correlation of distance and days, r = 0.799
coeficient of determination(COD) is r^2 = 0.799*0.799=0.638401
by COD it can be said that only 63.8401% variablity of the total variablity is expressed by this linear correlation.
2) slope b1=0.008973
3) inetrcept b0=4.018
4)
Predictor Coef SE Coef T P
Constant 4.018 1.591 2.53 0.036
distance 0.008973 0.002384 3.76 0.006
here p-value for slope=0.006<0.10 so we can say the intercept of regression has significant effect with the regression.
5) for slope p-value is 0.006 < 0.01 so we can say the slope of regression has significant effect with the regression.
6) The regression equation is
days = 4.02 + 0.00897 *200=5.814
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