Generally, retirement benefits, including Social Security or pensions, receive a cost of living increase (COLA), annually. These
1 answer:
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Answer: It is not enough evidence to support the researcher's claim.
Step-by-step explanation:
Since we have given that
n = 500
So, the hypothesis are as follows:
So, the z value would be
At α = 0.05
z= -1.64
So, 1.64<-1.33
So, we accept the null hypothesis.
Hence, it is not enough evidence to support the researcher's claim.