A pizza shop owner claims that the average time it takes for his drivers to deliver a pizza order is 30 minutes or less. You believe otherwise and decide to test this claim and record a random sample of 14 pizza orders, with the following delivery times (in minutes).

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15272348412945

Assuming that the times are normally distributed with a known population standard deviation of 6, can we conclude that that the average time it takes for his drivers to deliver a pizza order is more than 30 minutes? Use a 5% level of significance