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Mathematics, 22.02.2021 19:00 contactjoankenny
A random sample of 104 light bulbs had a mean life of x−=543 hours x - = 543 h o u r s with a standard deviation of σ=26 hours σ = 26 h o u r s . Construct a 90% confidence interval for the mean life, μ, of all light bulbs of this type.
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A random sample of 104 light bulbs had a mean life of x−=543 hours x - = 543 h o u r s with a standa...
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