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Suppose a research firm conducted a survey to determine the mean amount steady smokers spend on...

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 and the sample standard deviation is $5. What is the probability that a sample of 100 steady smokers spend between $20.80 and $22.00?

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Answer #1

o-=Standard deviation= $5 tnat Sample otloo Steady SMokevg Spend blw 1-0.9452 10.0.548 Probabii eta samle of to steadj Snmole

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