Question 887865
If a medical researcher wishes to determine whether there is evidence that the annual mean income
 of family physicians in the U.S. is less than $200,000, then which of the following tests should be utilized?
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"less than" implies a left-tailed test.
Ans: B
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Cheers,
Stan H.
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A) Either a one-sided or two-sided test 
B) A one-sided test 
C) A two-sided test 
D) Cannot be determined from the information