Cost of Dog Ownership Money reports that the average annual cost of the first year of owning and caring for a large dog in 2017 is $1448. 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 file 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 this 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?