4. A recent study stated that if a person smoked, the average of the number of cigarettes he or she smoked per day was 14. To test the claim, a researcher selected a random sample of 40 smokers and found that the mean number of cigarettes smoked per day was 18. The standard deviation was 6. At c= 0.05 (two tailed), is the number of cigarettes a person smokes per day actually equal to 14?
4. A recent study stated that if a person smoked, the average of the number of cigarettes he or she smoked per day was 14. To test the claim, a researcher selected a random sample of 40 smokers and found that the mean number of cigarettes smoked per day was 18. The standard deviation was 6. At c= 0.05 (two tailed), is the number of cigarettes a person smokes per day actually equal to 14?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
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