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You are working part-time at a road construction firm. Your boss knows you are learning some statistics in your classes this semester and calls you into the office. She says, "We've taken sample densities from loads of asphalt we've gotten from our supplier. The information from their company says their process produces a consistent density with a population standard deviation (ơ) of 2.75 pounds per cubic foot. Here's the data we've collected. Can you give me an estimate of the average density (a confidence interval) that our supplier's process is producing? I want to be 85% confident of the range you provide."

You are working part-time at a road construction firm. Your boss knows you are learning some statistics in your classes this semester and calls you into the office. She says, "We've taken sample densities from loads of asphalt we've gotten from our supplier. The information from their company says their process produces a consistent density with a population standard deviation (ơ) of 2.75 pounds per cubic foot. Here's the data we've collected. Can you give me an estimate of the average density (a confidence interval) that our supplier's process is producing? I want to be 85% confident of the range you provide."

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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145.84 141.53 143.85 145.91 154.48 152.34 141.42 153.04 146.92 144.83 146.89 144.46 144.67 148.95 148.73 148.76 146.78 141.8 146.9 149.32 146.3 147.74 146.93 144.2 145.78 142.91 143.33 141.81 144.33 141.21 144.94 143.51 150.77 148.02 138.38 146.17 141.29 144.32 145.44 146.98 144.28 149.18 143.73 145.87 146.76 145.23 145.98 146.25 145.86 147.47 146.07
Transcribed Image Text:145.84 141.53 143.85 145.91 154.48 152.34 141.42 153.04 146.92 144.83 146.89 144.46 144.67 148.95 148.73 148.76 146.78 141.8 146.9 149.32 146.3 147.74 146.93 144.2 145.78 142.91 143.33 141.81 144.33 141.21 144.94 143.51 150.77 148.02 138.38 146.17 141.29 144.32 145.44 146.98 144.28 149.18 143.73 145.87 146.76 145.23 145.98 146.25 145.86 147.47 146.07
You are working part-time at a road construction firm. Your boss knows you are learning some statistics in your classes this semester and calls you into the office. She says, "We've taken sample densities from loads of asphalt we've gotten from our supplier. The information from their company says their process produces a consistent density with a population standard deviation (ơ) of 2.75 pounds per cubic foot. Here's the data we've collected. Can you give me an estimate of the average density (a confidence interval) that our supplier's process is producing? I want to be 85% confident of the range you provide."
Transcribed Image Text:You are working part-time at a road construction firm. Your boss knows you are learning some statistics in your classes this semester and calls you into the office. She says, "We've taken sample densities from loads of asphalt we've gotten from our supplier. The information from their company says their process produces a consistent density with a population standard deviation (ơ) of 2.75 pounds per cubic foot. Here's the data we've collected. Can you give me an estimate of the average density (a confidence interval) that our supplier's process is producing? I want to be 85% confident of the range you provide."
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