Multiple Choice
A random sample of 500 reports an average yearly income of $42,000 with a standard deviation of $1000.An estimate of the parameter at the 95% level is about $175 wide.In this research situation,
A) the parameter is $42,000.
B) the sample is unrepresentative.
C) the alpha level is 0.05.
D) the sample mean is $175.
Correct Answer:
Verified
Correct Answer:
Verified
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