A glue company needs to make some glue that it can sell at $120 per barrel. It wants to use 150 barrels of glue worth $100 per barrel, along with some

opatovaL

opatovaL

Answered question

2021-06-14

Assume the sample is from a normally distributed population and construct the indicated confidence intervals for (a) the population variance σ2 and (b) the population standard deviation σ. Interpret the results. The reserve capacities (in hours) of 18 randomly selected automotive batteries have a sample standard deviation of 0.25 hour. Use an 80% level of confidence.

Answer & Explanation

nitruraviX

nitruraviX

Skilled2021-06-15Added 101 answers

Variance: (0.0426,0.1054)
Standard deviation: (0.2071, 0.3246)

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