document.write( "Question 281856: A psychologist would like to determine whether there is a relation between depression and aging. It is known that the general population averages µ = 40 on a standardized depression test. The psychologist obtains a sample of n = 36 individuals who are all older than the age of 70. The average depression score for this sample is M = 44.5 with SS = 5040. On the basis of this sample, can the psychologist conclude that depression for elderly people is significantly different from depression in the general population? Use a two-tailed test at the .05 level of significance. \n" ); document.write( "
Algebra.Com's Answer #204740 by stanbon(75887)\"\" \"About 
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A psychologist would like to determine whether there is a relation between depression and aging. It is known that the general population averages µ = 40 on a standardized depression test.
\n" ); document.write( "The psychologist obtains a sample of n = 36 individuals who are all older than the age of 70. The average depression score for this sample is M = 44.5 with SS = 5040.
\n" ); document.write( " On the basis of this sample, can the psychologist conclude that depression for elderly people is significantly different from depression in the general population? Use a two-tailed test at the .05 level of significance.
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\n" ); document.write( "Ho: u = 40
\n" ); document.write( "Ha: u is not equal to 40
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\n" ); document.write( "test stat: t(44.5) = (44.5-40)/[s/sqrt(36)]
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\n" ); document.write( "Note: You say SS=5040. You did not post the standard
\n" ); document.write( "deviation of the population or of the sample.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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