The average annual cost of the first year of owning and caring for a large dog is $1843 (uSNews and World report, September 9, 2013). The Irish Red and White Setter Associationof America has requested a study to estimate the annual first-year cost for owners of thisbreed. A sample of 50 will be used. based on past studies, the population standard deviation is assumed known with s = $255.a. What is the margin of error for a 95% confidence interval of the mean cost of the firstyear of owning and caring for this breed?b. The DATAfile Setters contains data collected from fifty owners of Irish Setters on thecost of the first year of owning and caring for their dogs. Use these data data set tocompute the sample mean. Using this sample, what is the 95% confidence interval forthe mean cost of the first year of owning and caring for an Irish Red and White Setter?
The average annual cost of the first year of owning and caring for a large dog is $1843 (uS
News and World report, September 9, 2013). The Irish Red and White Setter Association
of America has requested a study to estimate the annual first-year cost for owners of this
breed. A sample of 50 will be used. based on past studies, the population standard deviation is assumed known with s = $255.
a. What is the margin of error for a 95% confidence interval of the mean cost of the first
year of owning and caring for this breed?
b. The DATAfile Setters contains data collected from fifty owners of Irish Setters on the
cost of the first year of owning and caring for their dogs. Use these data data set to
compute the sample mean. Using this sample, what is the 95% confidence interval for
the mean cost of the first year of owning and caring for an Irish Red and White Setter?
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