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4. The tobacco manufacturer "Karólína Tóbak" advertised that their best-selling cigarettes contained a maximum of 40mg of nicotine. A consumer spokesperson tested 20 cigarettes randomly selected from different packs and found that the average nicotine content in the twenty cigarettes was 42mg and the standard deviation was 4mg. The nicotine content can be expected to follow a normal distribution. Perform an appropriate hypothesis test to see if the average nicotine content differs from 40mg. Show all six steps. Use a = 0.05.

4. The tobacco manufacturer "Karólína Tóbak" advertised that their best-selling cigarettes contained a maximum of 40mg of nicotine. A consumer spokesperson tested 20 cigarettes randomly selected from different packs and found that the average nicotine content in the twenty cigarettes was 42mg and the standard deviation was 4mg. The nicotine content can be expected to follow a normal distribution. Perform an appropriate hypothesis test to see if the average nicotine content differs from 40mg. Show all six steps. Use a = 0.05.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 7PPS
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4. The tobacco manufacturer "Karólína Tóbak" advertised that their best-selling cigarettes contained a maximum of 40mg of nicotine. A consumer spokesperson tested 20 cigarettes randomly selected from different packs and found that the average nicotine content in the twenty cigarettes was 42mg and the standard deviation was 4mg. The nicotine content can be expected to follow a normal distribution. Perform an appropriate hypothesis test to see if the average nicotine content differs from 40mg. Show all six steps. Use a = 0.05.
Transcribed Image Text:4. The tobacco manufacturer "Karólína Tóbak" advertised that their best-selling cigarettes contained a maximum of 40mg of nicotine. A consumer spokesperson tested 20 cigarettes randomly selected from different packs and found that the average nicotine content in the twenty cigarettes was 42mg and the standard deviation was 4mg. The nicotine content can be expected to follow a normal distribution. Perform an appropriate hypothesis test to see if the average nicotine content differs from 40mg. Show all six steps. Use a = 0.05.
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