document.write( "Question 617087: A researcher claims that the average age of people who buy lottery tickets is 65. A sample of 30 is selected and their ages are recorded as shown below. The standard deviation is 6. At a = 0.05 is there enough evidence to reject the researcher’s claim?
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Algebra.Com's Answer #388114 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi, 
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document.write( "A researcher claims that the average age of people who buy lottery tickets is 65
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document.write( "Sample mean of the 30 ages is 62.4 and sample SD = 16
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document.write( "z = = -.89
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document.write( "Sample size 30, Degree of Freedom 29,  a = 0.05%, (z = -2.05)
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document.write( "NOT enough evidence to reject researcher's claim \n" );
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