In the past, the time, in hours, for a particular train journey has had mean $$\(1.40\)$$ and standard deviation 0.12. Following the introduction of some new signals, it is required to test whether the mean journey time has decreased. State, with a reason, which of the errors, Type I or Type II, might have been made in the test in part (b). ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................

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