Multiple Choice
If the estimated population proportion is 30 percent based on previous studies, the acceptable error is plus or minus 5 percent, and the z-value for a 95 percent level of confidence is 1.96, the needed sample size is approximately:
A) 323.
B) 187.
C) 36.
D) 212.
E) 554.
Correct Answer:
Verified
Correct Answer:
Verified
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