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 26 drone deliveries with a sample variance of s2 = 0.36. (Round your answers to two decimal places.) (a)Construct a 90% confidence interval estimate of the population variance for the drone delivery time. _____ to ________   (b) Construct a 90% confidence interval estimate of the population standard deviation.   _______ to _________

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.