(All Steps) A psychologist would like to determine whether there is a relation between depression and aging. It is known that the general population averages
Question: 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=31 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.
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(All Steps) One sample has SS=35 and a second sample has SS=45. Assuming
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