A research firm conducted a survey to determine the mean amount smokers spend on cigarettes during a day. A sample of 100 smokers revealed that the sample mean is $5 and sample standard deviation is $2. The lower limit of the 95% confidence interval for the population mean is O a. 4.6 O b. 0.8 Oc. 5.5 O d. 5.4 O e. 5.6
A research firm conducted a survey to determine the mean amount smokers spend on cigarettes during a day. A sample of 100 smokers revealed that the sample mean is $5 and sample standard deviation is $2. The lower limit of the 95% confidence interval for the population mean is O a. 4.6 O b. 0.8 Oc. 5.5 O d. 5.4 O e. 5.6
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Transcribed Image Text:A research firm conducted a survey to determine
the mean amount smokers spend on cigarettes
during a day. A sample of 100 smokers revealed
that the sample mean is $5 and sample standard
deviation is $2. The lower limit of the 95%
confidence interval for the population mean is
О а. 4.6
O b. 0.8
Ос. 5.5
O d. 5.4
O e. 5.6
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