Confidence interval for the diiference of population means: Use... G For a study conducted by the research department of a pharmaceutical company, 300 randomly selected individuals were asked to report the amount of money they spend annually on prescription allergy relief medication. The sample mean was found to be S l7.60 with a standard deviation of $5.40. A random sample of 200 individuals was selected independently of the first sample. These individuals reported their annual spending on non-prescription allergy relief medication. The mean of the second sample was found to be $ 18.40 with a standard deviation of $4.50. As the sample sizes were quite large, it was assumed that the respective population standard deviations of the spending for prescription and non-prescription allergy relief medication could be estimated as the respective sample standard deviation values given above. Construct a 95% confidence interval for the difference \"1\"? between the mean spending on prescdptlon allergy relief medication (\"1) and the mean spending on non-prescription allergy relief medication (p2). Then nd the lower limit and upper limit of the 95% confidence Interval. Carry your lnten'nedlate computations to at least three decimal places. Round your answers to at least two decimal places. (If necessary, consult a list of [ formulas.) . Lower limit: E] Upper limit: D 245;\". enchant a D7