Question

Crime statistics suggest that the South has more violent crime than the rest of America. You wonder whether residents in the South feel less safe than the typical U.S. resident. Assume that the the average sense of safety is 4.7 on the personal safety scale. You obtain a sample that yields a sample mean of X‾‾ X ‾ = 3.2 on the personal safety scale. Let μ denote the average sense of safety. Formulate your null and research hypotheses by selecting the appropriate values in the dropdown menus that follow.

Answer 1

Here the NULL hypothesis will be u0=4.7

And alternative hypothesis will be ua<4.7

Si this is left tail hypothesis