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Mathematics, 26.11.2019 21:31 vkrizh
Amagazine includes a report on the energy costs per year for 32-inch liquid crystal display (lcd) televisions. the article states that 14 randomly selected 32-inch lcd televisions have a sample standard deviation of $3.08. assume the sample is taken from a normally distributed population. construct 90% confidence intervals for:
a. the population variance sigma squared.
b. the population standard deviation sigma.
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