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) we can be 95% confident that the population mean is 42,000 ± 175.
B) the sample size is much too small to justify the use of estimation procedures.
C) the alpha level is 1000.
D) the sample mean is $175.
Correct Answer:
Verified
Correct Answer:
Verified
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