Critical Thinking: Using Information from a Computer Display to Find a Confidence Interval.
(a) The standard error Seof the linear regression model is given in the printout as “S.” What is the value of Se?
(b) The standard error of the coefficient of the predictor variable is found under “SE Coef.” Recall that the standard error for bis . From the Minitab display, what is the value of the standard error for the slope b?
c) The formula for the margin of error E for a c% confidence interval for the slope β can be written as E = tc(SE Coef). The Minitab display is based on n = 9 data pairs. Find the critical value tcfor a 95% confidence interval in Table 6. Then find a 95% confidence interval for the population slope b.
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