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Posted on Jun 16, 2024

A report in LTO stated that the average age of taxis in the Philippines is 12 years. An operations manager of a large taxi company

A report in LTO stated that the average age of taxis in the Philippines is 12 years. An operations manager of a large taxi company selects a sample of 40 taxis and finds the average age of the taxis is 11.2 years. The standard deviation of the population is 2.3 years. At 0.05 level of significance, can it be concluded that the average age of the taxis in his company is less than the national average?

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