Use the data in Problem 14.30 to construct a 90% prediction interval to estimate the cost in February to heat a Northeast home that is 2,400 square feet. Verify your results using PHStat.
Answer to relevant QuestionsConsider the following set of ordered pairs: Assuming that the regression equation is y = 1.886 + 0.977x and that the SSE = 0.7955, test to determine if the slope is not equal to zero using α = 0.05. Using the data in Problem 14.36, construct a 95% confidence interval for the regression slope. In Problem Answer the following questions using the data from Problem 14.42: a. Calculate the slope and the y intercept for the regression equation. b. Calculate the SST. c. Partition the SST into the SSR and the SSE. In Problem Comcast’s customer service department asks its customers to rate their over the phone service on a scale of 1–20 immediately after their service has been completed. The company then matches each customer’s rating with ...Answer the following questions using the data from Problem 14.56: a. Using α = 0.01, test for the significance of the regression slope. b. Construct a 99% confidence interval for the population slope. c. What conclusions ...
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