Question: Northeast Commutes. Refer to Exercise 8.93. a. Determine and interpret a 90% upper confidence bound for the mean commute time of all commuters in Washington,

Northeast Commutes. Refer to Exercise 8.93.
a. Determine and interpret a 90% upper confidence bound for the mean commute time of all commuters in Washington, DC.
b. Compare your one-sided confidence interval in part (a) to the (two-sided) confidence interval found in Exercise 8.93(a).

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