Quick answer but right needed please. Thanks

timer Asked: Jun 21st, 2015

Question description

I need answer quick please.
For a study conducted by the research department of a pharmaceutical company,  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  with a standard deviation of . A random sample of  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  with a standard deviation of . 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  confidence interval for the difference  between the mean spending on prescription allergy relief medication () and the mean spending on non-prescription allergy relief medication (). Then complete the table below.

Carry your intermediate computations to at least three decimal places. Round your answers to at least two decimal places. 

What is the lower of the 90% confidence interval?

What is the upper of the 90% confidence interval?

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