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A manager of an e-commerce company would like to determine average delivery time of the products. A sample of 25 custome
Posted: Thu May 05, 2022 8:21 pm
by answerhappygod
- A Manager Of An E Commerce Company Would Like To Determine Average Delivery Time Of The Products A Sample Of 25 Custome 1 (18.1 KiB) Viewed 21 times
A manager of an e-commerce company would like to determine average delivery time of the products. A sample of 25 customers is taken. The average delivery time in the sample was four days with a standard deviation of 1.2 days. Suppose the delivery times are normally distributed. i) Estimate the mean delivery time with a 73% of confidence ii) Estimate the mean delivery time with a 91% of confidence iii) Show the trade-off between precision and confidence in this example.