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 a 22 3 4 4 3 4 0 2 1 y

x a 22 3 4 4 3 4 0 2 1 y = 5 - x

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