Question

The marketing team at an internet music site wants a better understanding of who their customers are. They send out a survey to 25 customers​ (and use an incentive of​ $50 worth of downloads to guarantee a high response​ rate) asking for demographic information. One of the variables is the​ customer's age. For the 25​ customers, the ages are shown to the right. Complete parts​ a) through​ d).	1919	3232	3434	2828	3232
	3232	3131	1414	2929	1111
	3737	2323	4343	4848	2525
	2626	2323	3232	3636	3333
	3636	4242	4242	4343	4848

​a) Find the quartiles using technology.

Q1=26 and Q3=37

​b) Find the quartiles using the Tukey method.

Q1=26 and Q3=37

​c) Find the IQR using the quartiles from part b.

IQR=11

​d) Find the standard deviation.

The standard deviation is ???

​(Round to three decimal places as​ needed.)

Answer 1