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?

395.84

step-by-step explanation:

2πrh+2πr²

2 (pie)(radius)(height)+2(pie)(radius)^2

she drove 134 miles

step-by-step explanation:

so firstly, we need to isolate the y variables to be able to solve these inequalities. firstly, add 0.5x on both sides of the first inequality and subtract 1.5x on both sides of the second inequality:

now since the slope is positive for the first inequality, this means that the line going upwards belongs to the first inequality, and the line going downwards belongs to the second inequality.

next, since y ≥ in the first inequality, this means that the shaded region will be above the first inequality's line, thus shading regions a and b.

next, since y ≤ in the second inequality, this means that the shaded region is going to be below this line, thus shading regions a and c.

since both lines shade region a, this means that region a is the solution.

step-by-step explanation:

mark brainliest!