Does the sulphur content of the fuel samples follow a normal distribution with a mean of 230 ppm and a standard deviation of 53 ppm? P-value number (rtol=0.01, atol=0.0001) What is your conclusion at a 1% significance level? ? O (a) The test is inconclusive O (b) The sulphur content of gas follows the stated distribution
Does the sulphur content of the fuel samples follow a normal distribution with a mean of 230 ppm and a standard deviation of 53 ppm? P-value number (rtol=0.01, atol=0.0001) What is your conclusion at a 1% significance level? ? O (a) The test is inconclusive O (b) The sulphur content of gas follows the stated distribution
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Transcribed Image Text:#563. Fuel Sulphur
A quality control engineer at Shell visits 85 gas stations and collects a fuel sample from each. She measures the
sulphur content in the gas and sorts the samples into 4 different batches. She finds: 19 samples with less than
180 ppm sulphur, 23 samples between 180 and 230 ppm, 23 samples between 230 and 280 ppm, and 20
samples with more than 280 ppm.
Does the sulphur content of the fuel samples follow a normal distribution with a mean of 230 ppm and a
standard deviation of 53 ppm?
P-value number (rtol=0.01, atol=0.0001)
What is your conclusion at a 1% significance level? ?
O (a) The test is inconclusive
O (b) The sulphur content of gas follows the stated distribution
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