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The simple linear regression analysis for cost (y) vs. weight (x) is given below Cost = 0.22292738 + 1.5199193*weight R2 = 0.59211446 T-test for B1:
The simple linear regression analysis for cost (y) vs. weight (x) is given below Cost = 0.22292738 + 1.5199193*weight R2 = 0.59211446 T-test for B1: t=5.1117538 p<0.0001 95% confidence interval for B1: (0.895, 2.145) From the above regression analysis, a 95% confidence interval for the shipping mean cost for all 10 pound packages is computed to be ($11.40, $19.44). Which of the following conclusions can be made based on this confidence interval? O The mean cost to ship a 10-lb package is greater than $12. There is a significant relationship between cost and weight. O The mean cost to ship a 10-lb package is less than $20. O The mean cost to ship a 10-lb package is never $15
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