Question: We repeat the information from exercise. a. Decide, at the 10% significance level, whether the data provide sufficient evidence to conclude that x is useful

We repeat the information from exercise.

a. Decide, at the 10% significance level, whether the data provide sufficient evidence to conclude that x is useful for predicting y.

b. Find a 90% confidence interval for the slope of the population regression line.X y 2 5 6 4 20 -2 1 02 2.875 0.625x

X y 2 5 6 4 20 -2 1 02 2.875 0.625x

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