Mathematics, 20.04.2021 19:20 emilysambrano2
The average annual cost of the first year of owning and caring for a cat is $1,500. A sample of 81 will be used. Based on past studies, the population standard deviation is assumed known with ฯ = $198. What is the margin of error for a 95% confidence interval of the mean cost of the first year of owning and caring for a cat?
Answers: 3
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The average annual cost of the first year of owning and caring for a cat is $1,500. A sample of 81 w...
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