A college professor claims that the students in his classes take less time to complete the Calculus common final exam. The times for all students taking the Calculus final is known to follow a normal distribution with a mean of  1.7 hours, and a standard deviation of 0.25 hours.  He will use  a section of Calculus 1, with 18 students to test his claim. The mean of his class is 1.6 hours. Test the profesor's claim using α=0.05.

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A college professor claims that the students in his classes take less time to complete the Calculus common final exam. The times for all students taking the Calculus final is known to follow a normal distribution with a mean of  1.7 hours, and a standard deviation of 0.25 hours.  He will use  a section of Calculus 1, with 18 students to test his claim. The mean of his class is 1.6 hours.

Test the profesor's claim using α=0.05.

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