Dropout Rates. Refer to Problems 11 and 12. a. At the 5% significance level, do the data
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Dropout Rates. Refer to Problems 11 and 12.
a. At the 5% significance level, do the data provide sufficient evidence to conclude that average age is useful as a predictor of dropout rate?
b. Determine a 95% confidence interval for the slope , β1, of the population regression line that relates dropout rate to average age.
Interpret your answer.
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