Every Monday, a company randomly selects 4 items from its pr…

Every Monday, a company randomly selects 4 items from its production line and measures the diameter of each item. This following table shows the data during last month (unit: inches). Week 1 Week 2 Week 3 Week 4 1 17.2 17.2 17.1 16.9 2 17.0 17.1 16.9 17.0 3 17.1 16.8 17.2 17.1 4 17.0 16.9 17.2 17.2 Suppose the process has a known mean and known standard deviation. After constructing the 3-sigma control limits of the mean chart, the company gets that UCL = 17.28 and LCL = 16.84. Which of the following statements is true?  

A man parks his car in a public park’s packing lot, then wal…

A man parks his car in a public park’s packing lot, then walks 1.5 mile to the east, 2.0 mile {a}° north of east, and then 0.2 mile to the north to find his friends who are having a picnic party.  How far has the man walked in the north direction? Express your answer in miles with two significant figures.  Please enter unit in the form of “mile”.

A man parks his car in a public park’s packing lot, then wal…

A man parks his car in a public park’s packing lot, then walks 1.5 mile to the east, 2.0 mile {a}° north of east, and then 0.2 mile to the north to find his friends who are having a picnic party.  How far is the man from his parked car in direct line distance?  Express your answer in miles with two significant figures.  Please enter unit in the form of “mile”.