In Order to Estimate the Difference Between the Average Daily

Essay

In order to estimate the difference between the average daily sales of two branches of a department store, the following data has been gathered.
a.Determine the point estimate of the difference between the means.
b.Determine the degrees of freedom for this interval estimation.
c.Compute the margin of error.
d.Develop a 95% confidence interval for the difference between the two population means.