Multiple Choice
Suppose a research firm conducted a survey to determine the mean amount steady smokers spend on cigarettes during a week. A sample of 100 steady smokers revealed that the sample mean is $20. The population standard deviation is $5. What is the probability that a sample of 100 steady smokers spend between $19 and $21?
A) 0.4772
B) 0.0228
C) 0.9544
D) 1.0000
Correct Answer:
Verified
Correct Answer:
Verified
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