Compute value v to enables us to state population variance

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Reference no: EM13123023

The lifetimes of 10 light bulbs (in hours burned) were recorded as follows:

51, 62, 45, 56, 73, 71, 63, 58, 59, 54

Assume the lifetime of a light bulb comes from a normal distribution.

a. Estimate the population variance (sigma^2) .
b. Compute a 99 percent two-sided confidence interval for population variance (sigma^2).
c. Compute a value V that enables us to state, with 90 percent confidence, that population variance (sigma^2) is less than V.

Reference no: EM13123023

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