An electrical contractor has concluded that the average home uses at least 500 yards of electrical wiring. In a sample of 45 homes, the mean amount of wiring is 545.3 yards with a standard deviation of 166.4 yards. a) at the 5% level of significance, do you agree with the contractor? 

MATLAB: An Introduction with Applications
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An electrical contractor has concluded that the average home uses at least 500 yards of electrical wiring. In a sample of 45 homes, the mean amount of wiring is 545.3 yards with a standard deviation of 166.4 yards. a) at the 5% level of significance, do you agree with the contractor? 
4) An electrical contractor has concluded that the average home uses at least 500 yards
of electrical wiring. In a sample of 45 homes, the mean amount of wiring is 545.3
yards with a standard deviation of 166.4 yards.
a) At the 5% level of significance, do you agree with the contractor?
Transcribed Image Text:4) An electrical contractor has concluded that the average home uses at least 500 yards of electrical wiring. In a sample of 45 homes, the mean amount of wiring is 545.3 yards with a standard deviation of 166.4 yards. a) At the 5% level of significance, do you agree with the contractor?
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