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The following table reproduced from Exercise 13 28 lists the percentages

The following table, reproduced from Exercise 13.28, lists the percentages of space for eight magazines that contain advertisements and the prices of these magazines.

a. Construct a 98% confidence interval for B. You can use the calculations made in Exercises 13.28 and 13.43 here.

b. Testing at the 5% significance level, can you conclude that B is different from zero?

a. Construct a 98% confidence interval for B. You can use the calculations made in Exercises 13.28 and 13.43 here.

b. Testing at the 5% significance level, can you conclude that B is different from zero?

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