Standard deviation of the population of all television tubes
A sample of 10 television tubes produced by the company showed mean lifetime of 1200 hours and standard deviation of 100 hours. Determine (a) the mean, (b) the standard deviation of the population of all television tubes produced by this company.
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Use the calculator to convert 147°40' to radians. Round the answer to nearest hundredth. Convert to decimal degrees, then multiply by suitable conversion factor to convert to radians.
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Answers this question in first person narration, Long essay, simple words if I am planning to have a Career as a Social Worker to become a Probation Officer:
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