[Step-by-Step] A public bus company official claims that the mean waiting time for bus number 14 during peak hours is less than 10 minutes. Karen took bus number
Question: A public bus company official claims that the mean waiting time for bus number 14 during peak hours is less than 10 minutes. Karen took bus number 14 during peak hours on 18 different occasions. Her mean waiting time was 7.4 minutes with a standard deviation of 2.4 minutes. At the 0.01 significance level, test the claim that the mean is less than 10 minutes.
Provide an appropriate response.
Deliverable: Word Document 
Solution: How do you determine whether to use the z or t distribution
![[Steps Shown] Use a significance level of](/images/solutions/MC-solution-library-41909.jpg "[Steps Shown] Use a significance level of 0.05 to test the claim")
[Steps Shown] Use a significance level of 0.05 to test the claim
![[Solution] Use the given degree of confidence](/images/solutions/MC-solution-library-41910.jpg "[Solution] Use the given degree of confidence and sample data")
[Solution] Use the given degree of confidence and sample data
(All Steps) n = 30, X̄ =85.4, s =11.5, 90 percent 79.61< X̄ <91.19
![[All Steps] In a sample of 47](/images/solutions/MC-solution-library-41912.jpg "[All Steps] In a sample of 47 adults selected randomly from one town,")
[All Steps] In a sample of 47 adults selected randomly from one town,
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