(Solved) A certain brand of fluorescent light tube was advertised as having an effective life span before burning out of 2000 hours. A random sample of
Question: A certain brand of fluorescent light tube was advertised as having an effective life span before burning out of 2000 hours. A random sample of 64 bulbs was burned out with a mean illumination life span of 1970 hours and with a sample standard deviation of 80 hours. Conduct a one-tail hypotheses test at alpha = .05 to determine if this sample data provides sufficient evidence to indicate that the bulbs have their advertised life expectancy. Do NOT do a confidence interval.
Deliverable: Word Document 
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[Solution] Given the following data from two independent data
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(Solution Library) The next page of this exam is a printout of a TIME-SERIES
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Hypothesis Testing (Part 1) - MathCracker.com