[Solution] (TCO 7) A marketing firm wants to estimate the average amount spent by patients at the hospital pharmacy. For a sample of 80 randomly selected patients,
Question: (TCO 7) A marketing firm wants to estimate the average amount spent by patients at the hospital pharmacy. For a sample of 80 randomly selected patients, the mean amount spent was $74.20 and the standard deviation was $11.45.
- Find a 95% confidence interval for the mean amount spent by patients at the pharmacy. Show your calculations.
- Interpret this confidence interval and write a sentence that explains it.
Deliverable: Word Document 
![[Steps Shown] (TCO 7) A drug manufacturer](/images/solutions/MC-solution-library-55656.jpg "[Steps Shown] (TCO 7) A drug manufacturer wants to estimate the")
[Steps Shown] (TCO 7) A drug manufacturer wants to estimate the
![[See Steps] (TCO 8) For the following](/images/solutions/MC-solution-library-55657.jpg "[See Steps] (TCO 8) For the following statement, write the null hypothesis")
[See Steps] (TCO 8) For the following statement, write the null hypothesis
(Solution Library) (TCO 8) A manufacturer claims that the mean lifetime
![[Step-by-Step] Interpret a 90% confidence interval of](/images/solutions/MC-solution-library-55659.jpg "[Step-by-Step] Interpret a 90% confidence interval of (4.355, 4.445)")
[Step-by-Step] Interpret a 90% confidence interval of (4.355, 4.445)
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[Solution Library] A nursing school wants to estimate the true mean
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