The average annual cost of the first year of owning and caring for a large dog i

Question

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 sigma = $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 (to 2 decimals)? 70 DATA file b. The DATA 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 these data sets to compute the sample mean (to 2 decimals). ________ 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 (to 2 decimals)? (____________, _____________)

Explanation / Answer

here std error =std deviation/(n)1/2 =36.06

for 95% CI, z=1.96

hence margin of error=z*std error =70.68

b)please provide data file details to answer further question

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