Question: 4. Package Delivery by Drones. Amazon.com is testing the use of drones to deliver packages for same-day delivery. In order to quote narrow time windows,
4. Package Delivery by Drones. Amazon.com is testing the use of drones to deliver packages for same-day delivery. In order to quote narrow time windows, the variability in delivery times must be sufficiently small. Consider a sample of 24 drone deliveries with a sample variance of s2 = .81.
a. Construct a 90% confidence interval estimate of the population variance for the drone delivery time.
b. Construct a 90% confidence interval estimate of the population standard deviation.
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